Tue Jun 12 15:23:42 2007  Google Inc. <opensource@google.com>

	* google-gflags: version 0.5
	* Include all m4 macros in the distribution (csilvers)
	* Python: Fix broken data_files field in setup.py (sidlon)
	* Python: better string serliaizing and unparsing (abo, csimmons)
	* Fix checks for NaN and inf to work with Mac OS X (csilvers)


git-svn-id: https://gflags.googlecode.com/svn/trunk@15 6586e3c6-dcc4-952a-343f-ff74eb82781d
diff --git a/ChangeLog b/ChangeLog
index e0000bd..48f6cb5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -27,3 +27,11 @@
 	* Remove is_default from GetCommandLineFlagInfo (csilvers)
 	* Portability fixes: includes, strtoll, gcc4.3 errors (csilvers)
 	* A few doc typo cleanups (csilvers)
+
+Tue Jun 12 15:23:42 2007  Google Inc. <opensource@google.com>
+
+	* google-gflags: version 0.5
+	* Include all m4 macros in the distribution (csilvers)
+	* Python: Fix broken data_files field in setup.py (sidlon)
+	* Python: better string serliaizing and unparsing (abo, csimmons)
+	* Fix checks for NaN and inf to work with Mac OS X (csilvers)
diff --git a/INSTALL b/INSTALL
index 316e397..23e5f25 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,14 +1,16 @@
-Copyright 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
-Foundation, Inc.
+Installation Instructions
+*************************
 
-   This file is free documentation; the Free Software Foundation gives
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005 Free
+Software Foundation, Inc.
+
+This file is free documentation; the Free Software Foundation gives
 unlimited permission to copy, distribute and modify it.
 
-
 Basic Installation
 ==================
 
-   These are generic installation instructions.
+These are generic installation instructions.
 
    The `configure' shell script attempts to guess correct values for
 various system-dependent variables used during compilation.  It uses
@@ -68,9 +70,9 @@
 Compilers and Options
 =====================
 
-   Some systems require unusual options for compilation or linking that
-the `configure' script does not know about.  Run `./configure --help'
-for details on some of the pertinent environment variables.
+Some systems require unusual options for compilation or linking that the
+`configure' script does not know about.  Run `./configure --help' for
+details on some of the pertinent environment variables.
 
    You can give `configure' initial values for configuration parameters
 by setting variables in the command line or in the environment.  Here
@@ -83,7 +85,7 @@
 Compiling For Multiple Architectures
 ====================================
 
-   You can compile the package for more than one kind of computer at the
+You can compile the package for more than one kind of computer at the
 same time, by placing the object files for each architecture in their
 own directory.  To do this, you must use a version of `make' that
 supports the `VPATH' variable, such as GNU `make'.  `cd' to the
@@ -100,19 +102,19 @@
 Installation Names
 ==================
 
-   By default, `make install' will install the package's files in
-`/usr/local/bin', `/usr/local/man', etc.  You can specify an
-installation prefix other than `/usr/local' by giving `configure' the
-option `--prefix=PATH'.
+By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc.  You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX'.
 
    You can specify separate installation prefixes for
 architecture-specific files and architecture-independent files.  If you
-give `configure' the option `--exec-prefix=PATH', the package will use
-PATH as the prefix for installing programs and libraries.
-Documentation and other data files will still use the regular prefix.
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
 
    In addition, if you use an unusual directory layout you can give
-options like `--bindir=PATH' to specify different values for particular
+options like `--bindir=DIR' to specify different values for particular
 kinds of files.  Run `configure --help' for a list of the directories
 you can set and what kinds of files go in them.
 
@@ -123,7 +125,7 @@
 Optional Features
 =================
 
-   Some packages pay attention to `--enable-FEATURE' options to
+Some packages pay attention to `--enable-FEATURE' options to
 `configure', where FEATURE indicates an optional part of the package.
 They may also pay attention to `--with-PACKAGE' options, where PACKAGE
 is something like `gnu-as' or `x' (for the X Window System).  The
@@ -138,11 +140,11 @@
 Specifying the System Type
 ==========================
 
-   There may be some features `configure' cannot figure out
-automatically, but needs to determine by the type of machine the package
-will run on.  Usually, assuming the package is built to be run on the
-_same_ architectures, `configure' can figure that out, but if it prints
-a message saying it cannot guess the machine type, give it the
+There may be some features `configure' cannot figure out automatically,
+but needs to determine by the type of machine the package will run on.
+Usually, assuming the package is built to be run on the _same_
+architectures, `configure' can figure that out, but if it prints a
+message saying it cannot guess the machine type, give it the
 `--build=TYPE' option.  TYPE can either be a short name for the system
 type, such as `sun4', or a canonical name which has the form:
 
@@ -157,7 +159,7 @@
 need to know the machine type.
 
    If you are _building_ compiler tools for cross-compiling, you should
-use the `--target=TYPE' option to select the type of system they will
+use the option `--target=TYPE' to select the type of system they will
 produce code for.
 
    If you want to _use_ a cross compiler, that generates code for a
@@ -168,9 +170,9 @@
 Sharing Defaults
 ================
 
-   If you want to set default values for `configure' scripts to share,
-you can create a site shell script called `config.site' that gives
-default values for variables like `CC', `cache_file', and `prefix'.
+If you want to set default values for `configure' scripts to share, you
+can create a site shell script called `config.site' that gives default
+values for variables like `CC', `cache_file', and `prefix'.
 `configure' looks for `PREFIX/share/config.site' if it exists, then
 `PREFIX/etc/config.site' if it exists.  Or, you can set the
 `CONFIG_SITE' environment variable to the location of the site script.
@@ -179,7 +181,7 @@
 Defining Variables
 ==================
 
-   Variables not defined in a site shell script can be set in the
+Variables not defined in a site shell script can be set in the
 environment passed to `configure'.  However, some packages may run
 configure again during the build, and the customized values of these
 variables may be lost.  In order to avoid this problem, you should set
@@ -187,14 +189,18 @@
 
      ./configure CC=/usr/local2/bin/gcc
 
-will cause the specified gcc to be used as the C compiler (unless it is
-overridden in the site shell script).
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).  Here is a another example:
+
+     /bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+Here the `CONFIG_SHELL=/bin/bash' operand causes subsequent
+configuration-related scripts to be executed by `/bin/bash'.
 
 `configure' Invocation
 ======================
 
-   `configure' recognizes the following options to control how it
-operates.
+`configure' recognizes the following options to control how it operates.
 
 `--help'
 `-h'
diff --git a/Makefile.am b/Makefile.am
index 720d1a2..75249fc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,7 +6,7 @@
 ## Process this file with automake to produce Makefile.in
 
 # Make sure that when we re-make ./configure, we get the macros we need
-ACLOCAL_AMFLAGS = -I `pwd`/../autoconf
+ACLOCAL_AMFLAGS = -I m4
 
 # This is so we can #include <google/foo>
 AM_CPPFLAGS = -I$(top_srcdir)/src
diff --git a/Makefile.in b/Makefile.in
index 5cefede..ac7b793 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -50,7 +50,11 @@
 	install-sh ltmain.sh missing mkinstalldirs
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/m4/ac_have_attribute.m4 \
+	$(top_srcdir)/m4/acx_pthread.m4 \
+	$(top_srcdir)/m4/google_namespace.m4 \
+	$(top_srcdir)/m4/namespaces.m4 \
+	$(top_srcdir)/m4/stl_namespace.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
@@ -232,7 +236,7 @@
 target_alias = @target_alias@
 
 # Make sure that when we re-make ./configure, we get the macros we need
-ACLOCAL_AMFLAGS = -I `pwd`/../autoconf
+ACLOCAL_AMFLAGS = -I m4
 
 # This is so we can #include <google/foo>
 AM_CPPFLAGS = -I$(top_srcdir)/src
@@ -593,7 +597,7 @@
 distdir: $(DISTFILES)
 	$(am__remove_distdir)
 	mkdir $(distdir)
-	$(mkdir_p) $(distdir)/doc $(distdir)/packages $(distdir)/packages/rpm $(distdir)/python $(distdir)/src $(distdir)/src/google
+	$(mkdir_p) $(distdir)/doc $(distdir)/m4 $(distdir)/packages $(distdir)/packages/rpm $(distdir)/python $(distdir)/src $(distdir)/src/google
 	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
 	list='$(DISTFILES)'; for file in $$list; do \
diff --git a/aclocal.m4 b/aclocal.m4
index 32c54e0..ced82fc 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -7265,448 +7265,8 @@
 AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
-AC_DEFUN([AX_C___ATTRIBUTE__], [
-  AC_MSG_CHECKING(for __attribute__)
-  AC_CACHE_VAL(ac_cv___attribute__, [
-    AC_TRY_COMPILE(
-      [#include <stdlib.h>
-       static void foo(void) __attribute__ ((unused));
-       void foo(void) { exit(1); }],
-      [],
-      ac_cv___attribute__=yes,
-      ac_cv___attribute__=no
-    )])
-  if test "$ac_cv___attribute__" = "yes"; then
-    AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__])
-  fi
-  AC_MSG_RESULT($ac_cv___attribute__)
-])
-
-# This was retrieved from
-#    http://0pointer.de/cgi-bin/viewcvs.cgi/trunk/common/acx_pthread.m4?rev=1220
-# See also (perhaps for new versions?)
-#    http://0pointer.de/cgi-bin/viewcvs.cgi/trunk/common/acx_pthread.m4
-
-dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-dnl
-dnl @summary figure out how to build C programs using POSIX threads
-dnl
-dnl This macro figures out how to build C programs using POSIX threads.
-dnl It sets the PTHREAD_LIBS output variable to the threads library and
-dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
-dnl C compiler flags that are needed. (The user can also force certain
-dnl compiler flags/libs to be tested by setting these environment
-dnl variables.)
-dnl
-dnl Also sets PTHREAD_CC to any special C compiler that is needed for
-dnl multi-threaded programs (defaults to the value of CC otherwise).
-dnl (This is necessary on AIX to use the special cc_r compiler alias.)
-dnl
-dnl NOTE: You are assumed to not only compile your program with these
-dnl flags, but also link it with them as well. e.g. you should link
-dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
-dnl $LIBS
-dnl
-dnl If you are only building threads programs, you may wish to use
-dnl these variables in your default LIBS, CFLAGS, and CC:
-dnl
-dnl        LIBS="$PTHREAD_LIBS $LIBS"
-dnl        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-dnl        CC="$PTHREAD_CC"
-dnl
-dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
-dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
-dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
-dnl
-dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
-dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
-dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
-dnl default action will define HAVE_PTHREAD.
-dnl
-dnl Please let the authors know if this macro fails on any platform, or
-dnl if you have any other suggestions or comments. This macro was based
-dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
-dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
-dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
-dnl We are also grateful for the helpful feedback of numerous users.
-dnl
-dnl @category InstalledPackages
-dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
-dnl @version 2005-06-15
-dnl @license GPLWithACException
-dnl 
-dnl Checks for GCC shared/pthread inconsistency based on work by
-dnl Marcin Owsiany <marcin@owsiany.pl>
-
-
-AC_DEFUN([ACX_PTHREAD], [
-AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_SAVE
-AC_LANG_C
-acx_pthread_ok=no
-
-# We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
-# It gets checked for in the link test anyway.
-
-# First of all, check if the user has set any of the PTHREAD_LIBS,
-# etcetera environment variables, and if threads linking works using
-# them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
-        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test x"$acx_pthread_ok" = xno; then
-                PTHREAD_LIBS=""
-                PTHREAD_CFLAGS=""
-        fi
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-fi
-
-# We must check for the threads library under a number of different
-# names; the ordering is very important because some systems
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
-# libraries is broken (non-POSIX).
-
-# Create a list of thread flags to try.  Items starting with a "-" are
-# C compiler flags, and other items are library names, except for "none"
-# which indicates that we try without any flags at all, and "pthread-config"
-# which is a program returning the flags for the Pth emulation library.
-
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
-
-# The ordering *is* (sometimes) important.  Some notes on the
-# individual items follow:
-
-# pthreads: AIX (must check this before -lpthread)
-# none: in case threads are in libc; should be tried before -Kthread and
-#       other compiler flags to prevent continual compiler warnings
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-#      doesn't hurt to check since this sometimes defines pthreads too;
-#      also defines -D_REENTRANT)
-#      ... -mt is also the pthreads flag for HP/aCC
-# pthread: Linux, etcetera
-# --thread-safe: KAI C++
-# pthread-config: use pthread-config program (for GNU Pth library)
-
-case "${host_cpu}-${host_os}" in
-        *solaris*)
-
-        # On Solaris (at least, for some versions), libc contains stubbed
-        # (non-functional) versions of the pthreads routines, so link-based
-        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
-        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
-        # a function called by this macro, so we could check for that, but
-        # who knows whether they'll stub that too in a future libc.)  So,
-        # we'll just look for -pthreads and -lpthread first:
-
-        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
-        ;;
-esac
-
-if test x"$acx_pthread_ok" = xno; then
-for flag in $acx_pthread_flags; do
-
-        case $flag in
-                none)
-                AC_MSG_CHECKING([whether pthreads work without any flags])
-                ;;
-
-                -*)
-                AC_MSG_CHECKING([whether pthreads work with $flag])
-                PTHREAD_CFLAGS="$flag"
-                ;;
-
-		pthread-config)
-		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
-		if test x"$acx_pthread_config" = xno; then continue; fi
-		PTHREAD_CFLAGS="`pthread-config --cflags`"
-		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
-		;;
-
-                *)
-                AC_MSG_CHECKING([for the pthreads library -l$flag])
-                PTHREAD_LIBS="-l$flag"
-                ;;
-        esac
-
-        save_LIBS="$LIBS"
-        save_CFLAGS="$CFLAGS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Check for various functions.  We must include pthread.h,
-        # since some functions may be macros.  (On the Sequent, we
-        # need a special flag -Kthread to make this header compile.)
-        # We check for pthread_join because it is in -lpthread on IRIX
-        # while pthread_create is in libc.  We check for pthread_attr_init
-        # due to DEC craziness with -lpthreads.  We check for
-        # pthread_cleanup_push because it is one of the few pthread
-        # functions on Solaris that doesn't have a non-functional libc stub.
-        # We try pthread_create on general principles.
-        AC_TRY_LINK([#include <pthread.h>],
-                    [pthread_t th; pthread_join(th, 0);
-                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
-                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-                    [acx_pthread_ok=yes])
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test "x$acx_pthread_ok" = xyes; then
-                break;
-        fi
-
-        PTHREAD_LIBS=""
-        PTHREAD_CFLAGS=""
-done
-fi
-
-# Various other checks:
-if test "x$acx_pthread_ok" = xyes; then
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
-	AC_MSG_CHECKING([for joinable pthread attribute])
-	attr_name=unknown
-	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
-	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
-                        [attr_name=$attr; break])
-	done
-        AC_MSG_RESULT($attr_name)
-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
-            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
-                               [Define to necessary symbol if this constant
-                                uses a non-standard name on your system.])
-        fi
-
-        AC_MSG_CHECKING([if more special flags are required for pthreads])
-        flag=no
-        case "${host_cpu}-${host_os}" in
-            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
-            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
-        esac
-        AC_MSG_RESULT(${flag})
-        if test "x$flag" != xno; then
-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
-        fi
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-
-        # More AIX lossage: must compile with cc_r
-        AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
-
-   # The next part tries to detect GCC inconsistency with -shared on some
-   # architectures and systems. The problem is that in certain
-   # configurations, when -shared is specified, GCC "forgets" to
-   # internally use various flags which are still necessary.
-   
-   # First, check whether caller wants us to skip -shared checks
-   # this is useful
-   AC_MSG_CHECKING([whether to check for GCC pthread/shared inconsistencies])
-   if test x"$GCC" != xyes; then
-      AC_MSG_RESULT([no])
-   else
-      AC_MSG_RESULT([yes])
-
-      # In order not to create several levels of indentation, we test
-      # the value of "$ok" until we find out the cure or run out of
-      # ideas.
-      ok="no"
-
-      #
-      # Prepare the flags
-      #
-      save_CFLAGS="$CFLAGS"
-      save_LIBS="$LIBS"
-      save_CC="$CC"
-      # Try with the flags determined by the earlier checks.
-      #
-      # -Wl,-z,defs forces link-time symbol resolution, so that the
-      # linking checks with -shared actually have any value
-      #
-      # FIXME: -fPIC is required for -shared on many architectures,
-      # so we specify it here, but the right way would probably be to
-      # properly detect whether it is actually required.
-      CFLAGS="-shared -fPIC -Wl,-z,defs $CFLAGS $PTHREAD_CFLAGS"
-      LIBS="$PTHREAD_LIBS $LIBS"
-      CC="$PTHREAD_CC"
-
-      AC_MSG_CHECKING([whether -pthread is sufficient with -shared])
-      AC_TRY_LINK([#include <pthread.h>],
-         [pthread_t th; pthread_join(th, 0);
-         pthread_attr_init(0); pthread_cleanup_push(0, 0);
-         pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-         [ok=yes])
-      
-      if test "x$ok" = xyes; then
-         AC_MSG_RESULT([yes])
-      else
-         AC_MSG_RESULT([no])
-      fi
-   
-      #
-      # Linux gcc on some architectures such as mips/mipsel forgets
-      # about -lpthread
-      #
-      if test x"$ok" = xno; then
-         AC_MSG_CHECKING([whether -lpthread fixes that])
-         LIBS="-lpthread $PTHREAD_LIBS $save_LIBS"
-         AC_TRY_LINK([#include <pthread.h>],
-            [pthread_t th; pthread_join(th, 0);
-            pthread_attr_init(0); pthread_cleanup_push(0, 0);
-            pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-            [ok=yes])
-   
-         if test "x$ok" = xyes; then
-            AC_MSG_RESULT([yes])
-            PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
-         else
-            AC_MSG_RESULT([no])
-         fi
-      fi
-      #
-      # FreeBSD 4.10 gcc forgets to use -lc_r instead of -lc
-      #
-      if test x"$ok" = xno; then
-         AC_MSG_CHECKING([whether -lc_r fixes that])
-         LIBS="-lc_r $PTHREAD_LIBS $save_LIBS"
-         AC_TRY_LINK([#include <pthread.h>],
-             [pthread_t th; pthread_join(th, 0);
-              pthread_attr_init(0); pthread_cleanup_push(0, 0);
-              pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-             [ok=yes])
-   
-         if test "x$ok" = xyes; then
-            AC_MSG_RESULT([yes])
-            PTHREAD_LIBS="-lc_r $PTHREAD_LIBS"
-         else
-            AC_MSG_RESULT([no])
-         fi
-      fi
-      if test x"$ok" = xno; then
-         # OK, we have run out of ideas
-         AC_MSG_WARN([Impossible to determine how to use pthreads with shared libraries])
-
-         # so it's not safe to assume that we may use pthreads
-         acx_pthread_ok=no
-      fi
-
-      CFLAGS="$save_CFLAGS"
-      LIBS="$save_LIBS"
-      CC="$save_CC"
-   fi
-else
-        PTHREAD_CC="$CC"
-fi
-
-AC_SUBST(PTHREAD_LIBS)
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_CC)
-
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$acx_pthread_ok" = xyes; then
-        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
-        :
-else
-        acx_pthread_ok=no
-        $2
-fi
-AC_LANG_RESTORE
-])dnl ACX_PTHREAD
-
-# Allow users to override the namespace we define our application's classes in
-# Arg $1 is the default namespace to use if --enable-namespace isn't present.
-
-# In general, $1 should be 'google', so we put all our exported symbols in a
-# unique namespace that is not likely to conflict with anyone else.  However,
-# when it makes sense -- for instance, when publishing stl-like code -- you
-# may want to go with a different default, like 'std'.
-
-AC_DEFUN([AC_DEFINE_GOOGLE_NAMESPACE],
-  [google_namespace_default=[$1]
-   AC_ARG_ENABLE(namespace, [  --enable-namespace=FOO to define these Google
-                             classes in the FOO namespace. --disable-namespace
-                             to define them in the global namespace. Default
-                             is to define them in namespace $1.],
-                 [case "$enableval" in
-                    yes) google_namespace="$google_namespace_default" ;;
-                     no) google_namespace="" ;;
-                      *) google_namespace="$enableval" ;;
-                  esac],
-                 [google_namespace="$google_namespace_default"])
-   if test -n "$google_namespace"; then
-     ac_google_namespace="$google_namespace"
-     ac_google_start_namespace="namespace $google_namespace {"
-     ac_google_end_namespace="}"
-   else
-     ac_google_namespace=""
-     ac_google_start_namespace=""
-     ac_google_end_namespace=""
-   fi
-   AC_DEFINE_UNQUOTED(GOOGLE_NAMESPACE, $ac_google_namespace,
-                      Namespace for Google classes)
-   AC_DEFINE_UNQUOTED(_START_GOOGLE_NAMESPACE_, $ac_google_start_namespace,
-                      Puts following code inside the Google namespace)
-   AC_DEFINE_UNQUOTED(_END_GOOGLE_NAMESPACE_,  $ac_google_end_namespace,
-                      Stops putting the code inside the Google namespace)
-])
-
-# Checks whether the compiler implements namespaces
-AC_DEFUN([AC_CXX_NAMESPACES],
- [AC_CACHE_CHECK(whether the compiler implements namespaces,
-                 ac_cv_cxx_namespaces,
-                 [AC_LANG_SAVE
-                  AC_LANG_CPLUSPLUS
-                  AC_TRY_COMPILE([namespace Outer {
-                                    namespace Inner { int i = 0; }}],
-                                 [using namespace Outer::Inner; return i;],
-                                 ac_cv_cxx_namespaces=yes,
-                                 ac_cv_cxx_namespaces=no)
-                  AC_LANG_RESTORE])
-  if test "$ac_cv_cxx_namespaces" = yes; then
-    AC_DEFINE(HAVE_NAMESPACES, 1, [define if the compiler implements namespaces])
-  fi])
-
-# We check what namespace stl code like vector expects to be executed in
-
-AC_DEFUN([AC_CXX_STL_NAMESPACE],
-  [AC_CACHE_CHECK(
-      what namespace STL code is in,
-      ac_cv_cxx_stl_namespace,
-      [AC_REQUIRE([AC_CXX_NAMESPACES])
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
-      AC_TRY_COMPILE([#include <vector>],
-                     [vector<int> t; return 0;],
-                     ac_cv_cxx_stl_namespace=none)
-      AC_TRY_COMPILE([#include <vector>],
-                     [std::vector<int> t; return 0;],
-                     ac_cv_cxx_stl_namespace=std)
-      AC_LANG_RESTORE])
-   if test "$ac_cv_cxx_stl_namespace" = none; then
-      AC_DEFINE(STL_NAMESPACE,,
-                [the namespace where STL code like vector<> is defined])
-   fi
-   if test "$ac_cv_cxx_stl_namespace" = std; then
-      AC_DEFINE(STL_NAMESPACE,std,
-                [the namespace where STL code like vector<> is defined])
-   fi
-])
-
+m4_include([m4/ac_have_attribute.m4])
+m4_include([m4/acx_pthread.m4])
+m4_include([m4/google_namespace.m4])
+m4_include([m4/namespaces.m4])
+m4_include([m4/stl_namespace.m4])
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..4d53592
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# Before using, you should figure out all the .m4 macros that your
+# configure.m4 script needs and make sure they exist in the autoconf/
+# directory.
+#
+# These are the files that this script might edit:
+#    aclocal.m4 configure Makefile.in src/config.h.in \
+#    depcomp config.guess config.sub install-sh missing mkinstalldirs \
+#    ltmain.sh
+#
+# Here's a command you can run to see what files aclocal will import:
+#  aclocal -I ../autoconf --output=- | sed -n 's/^m4_include..\([^]]*\).*/\1/p'
+
+set -ex
+rm -rf autom4te.cache
+
+aclocal --force -I m4
+grep -q LIBTOOL configure.ac && libtoolize -c -f
+autoconf -f -W all,no-obsolete
+autoheader -f -W all
+automake -a -c -f -W all
+
+rm -rf autom4te.cache
+exit 0
diff --git a/configure b/configure
index e98bbe2..b129282 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.59 for gflags 0.4.
+# Generated by GNU Autoconf 2.59 for gflags 0.5.
 #
 # Report bugs to <opensource@google.com>.
 #
@@ -423,8 +423,8 @@
 # Identity of this package.
 PACKAGE_NAME='gflags'
 PACKAGE_TARNAME='gflags'
-PACKAGE_VERSION='0.4'
-PACKAGE_STRING='gflags 0.4'
+PACKAGE_VERSION='0.5'
+PACKAGE_STRING='gflags 0.5'
 PACKAGE_BUGREPORT='opensource@google.com'
 
 ac_unique_file="README"
@@ -954,7 +954,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures gflags 0.4 to adapt to many kinds of systems.
+\`configure' configures gflags 0.5 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1020,7 +1020,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of gflags 0.4:";;
+     short | recursive ) echo "Configuration of gflags 0.5:";;
    esac
   cat <<\_ACEOF
 
@@ -1163,7 +1163,7 @@
 test -n "$ac_init_help" && exit 0
 if $ac_init_version; then
   cat <<\_ACEOF
-gflags configure 0.4
+gflags configure 0.5
 generated by GNU Autoconf 2.59
 
 Copyright (C) 2003 Free Software Foundation, Inc.
@@ -1177,7 +1177,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by gflags $as_me 0.4, which was
+It was created by gflags $as_me 0.5, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   $ $0 $@
@@ -1823,7 +1823,7 @@
 
 # Define the identity of the package.
  PACKAGE='gflags'
- VERSION='0.4'
+ VERSION='0.5'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -20926,7 +20926,7 @@
 } >&5
 cat >&5 <<_CSEOF
 
-This file was extended by gflags $as_me 0.4, which was
+This file was extended by gflags $as_me 0.5, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -20989,7 +20989,7 @@
 
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-gflags config.status 0.4
+gflags config.status 0.5
 configured by $0, generated by GNU Autoconf 2.59,
   with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/configure.ac b/configure.ac
index b0f3658..d6326b6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,16 +1,10 @@
-## This is a boilerplate file for Google opensource projects.
-## To make it useful, replace <<TEXT>> with actual text for your project.
-## Also, look at comments with "## double hashes" to see if any are worth
-## uncommenting or modifying.
-
 ## Process this file with autoconf to produce configure.
-## In general, the safest way to proceed is to run the following:
-##    % aclocal -I . -I `pwd`/../autoconf && autoheader && autoconf && automake
+## In general, the safest way to proceed is to run ./autogen.sh
 
 # make sure we're interpreted by some minimal autoconf
 AC_PREREQ(2.57)
 
-AC_INIT(gflags, 0.4, opensource@google.com)
+AC_INIT(gflags, 0.5, opensource@google.com)
 # The argument here is just something that should be in the current directory
 # (for sanity checking)
 AC_CONFIG_SRCDIR(README)
diff --git a/depcomp b/depcomp
index 807b991..04701da 100755
--- a/depcomp
+++ b/depcomp
@@ -1,7 +1,9 @@
 #! /bin/sh
-
 # depcomp - compile a program generating dependencies as side-effects
-# Copyright 1999, 2000 Free Software Foundation, Inc.
+
+scriptversion=2005-07-09.11
+
+# Copyright (C) 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,8 +17,8 @@
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -25,22 +27,45 @@
 
 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
 
+case $1 in
+  '')
+     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by `PROGRAMS ARGS'.
+  object      Object file output by `PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputing dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
 fi
-# `libtool' can also be set to `yes' or `no'.
 
-if test -z "$depfile"; then
-   base=`echo "$object" | sed -e 's,^.*/,,' -e 's,\.\([^.]*\)$,.P\1,'`
-   dir=`echo "$object" | sed 's,/.*$,/,'`
-   if test "$dir" = "$object"; then
-      dir=
-   fi
-   # FIXME: should be _deps on DOS.
-   depfile="$dir.deps/$base"
-fi
-
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
 
 rm -f "$tmpdepfile"
@@ -172,19 +197,25 @@
 
 aix)
   # The C for AIX Compiler uses -M and outputs the dependencies
-  # in a .u file.  This file always lives in the current directory.
-  # Also, the AIX compiler puts `$object:' at the start of each line;
-  # $object doesn't have directory information.
-  stripped=`echo "$object" | sed -e 's,^.*/,,' -e 's/\(.*\)\..*$/\1/'`
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts `$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
   tmpdepfile="$stripped.u"
-  outname="$stripped.o"
   if test "$libtool" = yes; then
     "$@" -Wc,-M
   else
     "$@" -M
   fi
-
   stat=$?
+
+  if test -f "$tmpdepfile"; then :
+  else
+    stripped=`echo "$stripped" | sed 's,^.*/,,'`
+    tmpdepfile="$stripped.u"
+  fi
+
   if test $stat -eq 0; then :
   else
     rm -f "$tmpdepfile"
@@ -192,6 +223,7 @@
   fi
 
   if test -f "$tmpdepfile"; then
+    outname="$stripped.o"
     # Each line is of the form `foo.o: dependent.h'.
     # Do two passes, one to just change these to
     # `$object: dependent.h' and one to simply `dependent.h:'.
@@ -206,6 +238,44 @@
   rm -f "$tmpdepfile"
   ;;
 
+icc)
+  # Intel's C compiler understands `-MD -MF file'.  However on
+  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+  # ICC 7.0 will fill foo.d with something like
+  #    foo.o: sub/foo.c
+  #    foo.o: sub/foo.h
+  # which is wrong.  We want:
+  #    sub/foo.o: sub/foo.c
+  #    sub/foo.o: sub/foo.h
+  #    sub/foo.c:
+  #    sub/foo.h:
+  # ICC 7.1 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using \ :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -eq 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
+    sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
 tru64)
    # The Tru64 compiler uses -MD to generate dependencies as a side
    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
@@ -217,31 +287,47 @@
    base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
 
    if test "$libtool" = yes; then
-      tmpdepfile1="$dir.libs/$base.lo.d"
-      tmpdepfile2="$dir.libs/$base.d"
+      # With Tru64 cc, shared objects can also be used to make a
+      # static library.  This mecanism is used in libtool 1.4 series to
+      # handle both shared and static libraries in a single compilation.
+      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
+      #
+      # With libtool 1.5 this exception was removed, and libtool now
+      # generates 2 separate objects for the 2 libraries.  These two
+      # compilations output dependencies in in $dir.libs/$base.o.d and
+      # in $dir$base.o.d.  We have to check for both files, because
+      # one of the two compilations can be disabled.  We should prefer
+      # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+      # automatically cleaned when .libs/ is deleted, while ignoring
+      # the former would cause a distcleancheck panic.
+      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
+      tmpdepfile2=$dir$base.o.d          # libtool 1.5
+      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
+      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
       "$@" -Wc,-MD
    else
-      tmpdepfile1="$dir$base.o.d"
-      tmpdepfile2="$dir$base.d"
+      tmpdepfile1=$dir$base.o.d
+      tmpdepfile2=$dir$base.d
+      tmpdepfile3=$dir$base.d
+      tmpdepfile4=$dir$base.d
       "$@" -MD
    fi
 
    stat=$?
    if test $stat -eq 0; then :
    else
-      rm -f "$tmpdepfile1" "$tmpdepfile2"
+      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
       exit $stat
    fi
 
-   if test -f "$tmpdepfile1"; then
-      tmpdepfile="$tmpdepfile1"
-   else
-      tmpdepfile="$tmpdepfile2"
-   fi
+   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+   do
+     test -f "$tmpdepfile" && break
+   done
    if test -f "$tmpdepfile"; then
       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-      # That's a space and a tab in the [].
-      sed -e 's,^.*\.[a-z]*:[ 	]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+      # That's a tab and a space in the [].
+      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
    else
       echo "#dummy" > "$depfile"
    fi
@@ -254,7 +340,7 @@
 
 dashmstdout)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the proprocessed file to stdout, regardless of -o.
+  # always write the preprocessed file to stdout, regardless of -o.
   "$@" || exit $?
 
   # Remove the call to Libtool.
@@ -265,9 +351,7 @@
     shift
   fi
 
-  # Remove `-o $object'.  We will use -o /dev/null later,
-  # however we can't do the remplacement now because
-  # `-o $object' might simply not be used
+  # Remove `-o $object'.
   IFS=" "
   for arg
   do
@@ -287,7 +371,11 @@
   done
 
   test -z "$dashmflag" && dashmflag=-M
-  "$@" -o /dev/null $dashmflag | sed 's:^[^:]*\:[ 	]*:'"$object"'\: :' > "$tmpdepfile"
+  # Require at least two characters before searching for `:'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+  "$@" $dashmflag |
+    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
   tr ' ' '
@@ -306,6 +394,13 @@
 
 makedepend)
   "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test $1 != '--mode=compile'; do
+      shift
+    done
+    shift
+  fi
   # X makedepend
   shift
   cleared=no
@@ -318,7 +413,9 @@
     case "$arg" in
     -D*|-I*)
       set fnord "$@" "$arg"; shift ;;
-    -*)
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -*|$object)
       ;;
     *)
       set fnord "$@" "$arg"; shift ;;
@@ -339,7 +436,7 @@
 
 cpp)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the proprocessed file to stdout.
+  # always write the preprocessed file to stdout.
   "$@" || exit $?
 
   # Remove the call to Libtool.
@@ -370,7 +467,8 @@
   done
 
   "$@" -E |
-    sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
+    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
     sed '$ s: \\$::' > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
@@ -381,7 +479,7 @@
 
 msvisualcpp)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the proprocessed file to stdout, regardless of -o,
+  # always write the preprocessed file to stdout, regardless of -o,
   # because we must use -o when running libtool.
   "$@" || exit $?
   IFS=" "
@@ -421,3 +519,12 @@
 esac
 
 exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/install-sh b/install-sh
index 11870f1..4d4a951 100755
--- a/install-sh
+++ b/install-sh
@@ -1,19 +1,38 @@
 #!/bin/sh
-#
 # install - install a program, script, or datafile
-# This comes from X11R5 (mit/util/scripts/install.sh).
+
+scriptversion=2005-05-14.22
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
 #
-# Copyright 1991 by the Massachusetts Institute of Technology
+# Copyright (C) 1994 X Consortium
 #
-# Permission to use, copy, modify, distribute, and sell this software and its
-# documentation for any purpose is hereby granted without fee, provided that
-# the above copyright notice appear in all copies and that both that
-# copyright notice and this permission notice appear in supporting
-# documentation, and that the name of M.I.T. not be used in advertising or
-# publicity pertaining to distribution of the software without specific,
-# written prior permission.  M.I.T. makes no representations about the
-# suitability of this software for any purpose.  It is provided "as is"
-# without express or implied warranty.
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
 # `make' implicit rules from creating a file called install from it
@@ -23,13 +42,11 @@
 # from scratch.  It can only install one file at a time, a restriction
 # shared with many OS's install programs.
 
-
 # set DOITPROG to echo to test this script
 
 # Don't use :- since 4.3BSD and earlier shells don't like it.
 doit="${DOITPROG-}"
 
-
 # put in absolute paths if you don't have them in your path; or use env. vars.
 
 mvprog="${MVPROG-mv}"
@@ -41,211 +58,266 @@
 rmprog="${RMPROG-rm}"
 mkdirprog="${MKDIRPROG-mkdir}"
 
-transformbasename=""
-transform_arg=""
-instcmd="$mvprog"
 chmodcmd="$chmodprog 0755"
-chowncmd=""
-chgrpcmd=""
-stripcmd=""
+chowncmd=
+chgrpcmd=
+stripcmd=
 rmcmd="$rmprog -f"
 mvcmd="$mvprog"
-src=""
-dst=""
-dir_arg=""
+src=
+dst=
+dir_arg=
+dstarg=
+no_target_directory=
 
-while [ x"$1" != x ]; do
-    case $1 in
-	-c) instcmd="$cpprog"
-	    shift
-	    continue;;
+usage="Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
 
-	-d) dir_arg=true
-	    shift
-	    continue;;
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
 
-	-m) chmodcmd="$chmodprog $2"
-	    shift
-	    shift
-	    continue;;
+Options:
+-c         (ignored)
+-d         create directories instead of installing files.
+-g GROUP   $chgrpprog installed files to GROUP.
+-m MODE    $chmodprog installed files to MODE.
+-o USER    $chownprog installed files to USER.
+-s         $stripprog installed files.
+-t DIRECTORY  install into DIRECTORY.
+-T         report an error if DSTFILE is a directory.
+--help     display this help and exit.
+--version  display version info and exit.
 
-	-o) chowncmd="$chownprog $2"
-	    shift
-	    shift
-	    continue;;
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
+"
 
-	-g) chgrpcmd="$chgrpprog $2"
-	    shift
-	    shift
-	    continue;;
+while test -n "$1"; do
+  case $1 in
+    -c) shift
+        continue;;
 
-	-s) stripcmd="$stripprog"
-	    shift
-	    continue;;
+    -d) dir_arg=true
+        shift
+        continue;;
 
-	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
-	    shift
-	    continue;;
+    -g) chgrpcmd="$chgrpprog $2"
+        shift
+        shift
+        continue;;
 
-	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
-	    shift
-	    continue;;
+    --help) echo "$usage"; exit $?;;
 
-	*)  if [ x"$src" = x ]
-	    then
-		src=$1
-	    else
-		# this colon is to work around a 386BSD /bin/sh bug
-		:
-		dst=$1
-	    fi
-	    shift
-	    continue;;
-    esac
-done
+    -m) chmodcmd="$chmodprog $2"
+        shift
+        shift
+        continue;;
 
-if [ x"$src" = x ]
-then
-	echo "install:	no input file specified"
-	exit 1
-else
-	:
-fi
+    -o) chowncmd="$chownprog $2"
+        shift
+        shift
+        continue;;
 
-if [ x"$dir_arg" != x ]; then
-	dst=$src
-	src=""
-	
-	if [ -d $dst ]; then
-		instcmd=:
-		chmodcmd=""
-	else
-		instcmd=$mkdirprog
-	fi
-else
+    -s) stripcmd=$stripprog
+        shift
+        continue;;
 
-# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
-# might cause directories to be created, which would be especially bad 
-# if $src (and thus $dsttmp) contains '*'.
-
-	if [ -f "$src" ] || [ -d "$src" ]
-	then
-		:
-	else
-		echo "install:  $src does not exist"
-		exit 1
-	fi
-	
-	if [ x"$dst" = x ]
-	then
-		echo "install:	no destination specified"
-		exit 1
-	else
-		:
-	fi
-
-# If destination is a directory, append the input filename; if your system
-# does not like double slashes in filenames, you may need to add some logic
-
-	if [ -d $dst ]
-	then
-		dst="$dst"/`basename $src`
-	else
-		:
-	fi
-fi
-
-## this sed command emulates the dirname command
-dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
-
-# Make sure that the destination directory exists.
-#  this part is taken from Noah Friedman's mkinstalldirs script
-
-# Skip lots of stat calls in the usual case.
-if [ ! -d "$dstdir" ]; then
-defaultIFS='
-	'
-IFS="${IFS-${defaultIFS}}"
-
-oIFS="${IFS}"
-# Some sh's can't handle IFS=/ for some reason.
-IFS='%'
-set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
-IFS="${oIFS}"
-
-pathcomp=''
-
-while [ $# -ne 0 ] ; do
-	pathcomp="${pathcomp}${1}"
+    -t) dstarg=$2
 	shift
+	shift
+	continue;;
 
-	if [ ! -d "${pathcomp}" ] ;
-        then
-		$mkdirprog "${pathcomp}"
-	else
-		:
-	fi
+    -T) no_target_directory=true
+	shift
+	continue;;
 
-	pathcomp="${pathcomp}/"
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    *)  # When -d is used, all remaining arguments are directories to create.
+	# When -t is used, the destination is already specified.
+	test -n "$dir_arg$dstarg" && break
+        # Otherwise, the last argument is the destination.  Remove it from $@.
+	for arg
+	do
+          if test -n "$dstarg"; then
+	    # $@ is not empty: it contains at least $arg.
+	    set fnord "$@" "$dstarg"
+	    shift # fnord
+	  fi
+	  shift # arg
+	  dstarg=$arg
+	done
+	break;;
+  esac
 done
+
+if test -z "$1"; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call `install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
 fi
 
-if [ x"$dir_arg" != x ]
-then
-	$doit $instcmd $dst &&
+for src
+do
+  # Protect names starting with `-'.
+  case $src in
+    -*) src=./$src ;;
+  esac
 
-	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else : ; fi &&
-	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else : ; fi &&
-	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else : ; fi &&
-	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else : ; fi
-else
+  if test -n "$dir_arg"; then
+    dst=$src
+    src=
 
-# If we're going to rename the final executable, determine the name now.
+    if test -d "$dst"; then
+      mkdircmd=:
+      chmodcmd=
+    else
+      mkdircmd=$mkdirprog
+    fi
+  else
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
 
-	if [ x"$transformarg" = x ] 
-	then
-		dstfile=`basename $dst`
-	else
-		dstfile=`basename $dst $transformbasename | 
-			sed $transformarg`$transformbasename
-	fi
+    if test -z "$dstarg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
 
-# don't allow the sed command to completely eliminate the filename
+    dst=$dstarg
+    # Protect names starting with `-'.
+    case $dst in
+      -*) dst=./$dst ;;
+    esac
 
-	if [ x"$dstfile" = x ] 
-	then
-		dstfile=`basename $dst`
-	else
-		:
-	fi
+    # If destination is a directory, append the input filename; won't work
+    # if double slashes aren't ignored.
+    if test -d "$dst"; then
+      if test -n "$no_target_directory"; then
+	echo "$0: $dstarg: Is a directory" >&2
+	exit 1
+      fi
+      dst=$dst/`basename "$src"`
+    fi
+  fi
 
-# Make a temp file name in the proper directory.
+  # This sed command emulates the dirname command.
+  dstdir=`echo "$dst" | sed -e 's,/*$,,;s,[^/]*$,,;s,/*$,,;s,^$,.,'`
 
-	dsttmp=$dstdir/#inst.$$#
+  # Make sure that the destination directory exists.
 
-# Move or copy the file name to the temp name
+  # Skip lots of stat calls in the usual case.
+  if test ! -d "$dstdir"; then
+    defaultIFS='
+	 '
+    IFS="${IFS-$defaultIFS}"
 
-	$doit $instcmd $src $dsttmp &&
+    oIFS=$IFS
+    # Some sh's can't handle IFS=/ for some reason.
+    IFS='%'
+    set x `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
+    shift
+    IFS=$oIFS
 
-	trap "rm -f ${dsttmp}" 0 &&
+    pathcomp=
 
-# and set any options; do chmod last to preserve setuid bits
+    while test $# -ne 0 ; do
+      pathcomp=$pathcomp$1
+      shift
+      if test ! -d "$pathcomp"; then
+        $mkdirprog "$pathcomp"
+	# mkdir can fail with a `File exist' error in case several
+	# install-sh are creating the directory concurrently.  This
+	# is OK.
+	test -d "$pathcomp" || exit
+      fi
+      pathcomp=$pathcomp/
+    done
+  fi
 
-# If any of these fail, we abort the whole thing.  If we want to
-# ignore errors from any of these, just make sure not to ignore
-# errors from the above "$doit $instcmd $src $dsttmp" command.
+  if test -n "$dir_arg"; then
+    $doit $mkdircmd "$dst" \
+      && { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
+      && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
+      && { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
+      && { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
 
-	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else :;fi &&
-	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else :;fi &&
-	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else :;fi &&
-	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else :;fi &&
+  else
+    dstfile=`basename "$dst"`
 
-# Now rename the file to the real destination.
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=$dstdir/_inst.$$_
+    rmtmp=$dstdir/_rm.$$_
 
-	$doit $rmcmd -f $dstdir/$dstfile &&
-	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+    trap '(exit $?); exit' 1 2 13 15
 
-fi &&
+    # Copy the file name to the temp name.
+    $doit $cpprog "$src" "$dsttmp" &&
 
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
+      && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
+      && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
+      && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
 
-exit 0
+    # Now rename the file to the real destination.
+    { $doit $mvcmd -f "$dsttmp" "$dstdir/$dstfile" 2>/dev/null \
+      || {
+	   # The rename failed, perhaps because mv can't rename something else
+	   # to itself, or perhaps because mv is so ancient that it does not
+	   # support -f.
+
+	   # Now remove or move aside any old file at destination location.
+	   # We try this two ways since rm can't unlink itself on some
+	   # systems and the destination file might be busy for other
+	   # reasons.  In this case, the final cleanup might fail but the new
+	   # file should still install successfully.
+	   {
+	     if test -f "$dstdir/$dstfile"; then
+	       $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
+	       || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
+	       || {
+		 echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
+		 (exit 1); exit 1
+	       }
+	     else
+	       :
+	     fi
+	   } &&
+
+	   # Now rename the file to the real destination.
+	   $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
+	 }
+    }
+  fi || { (exit 1); exit 1; }
+done
+
+# The final little trick to "correctly" pass the exit status to the exit trap.
+{
+  (exit 0); exit 0
+}
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/m4/ac_have_attribute.m4 b/m4/ac_have_attribute.m4
new file mode 100644
index 0000000..19f4021
--- /dev/null
+++ b/m4/ac_have_attribute.m4
@@ -0,0 +1,16 @@
+AC_DEFUN([AX_C___ATTRIBUTE__], [
+  AC_MSG_CHECKING(for __attribute__)
+  AC_CACHE_VAL(ac_cv___attribute__, [
+    AC_TRY_COMPILE(
+      [#include <stdlib.h>
+       static void foo(void) __attribute__ ((unused));
+       void foo(void) { exit(1); }],
+      [],
+      ac_cv___attribute__=yes,
+      ac_cv___attribute__=no
+    )])
+  if test "$ac_cv___attribute__" = "yes"; then
+    AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__])
+  fi
+  AC_MSG_RESULT($ac_cv___attribute__)
+])
diff --git a/m4/acx_pthread.m4 b/m4/acx_pthread.m4
new file mode 100644
index 0000000..919b912
--- /dev/null
+++ b/m4/acx_pthread.m4
@@ -0,0 +1,348 @@
+# This was retrieved from
+#    http://0pointer.de/cgi-bin/viewcvs.cgi/trunk/common/acx_pthread.m4?rev=1220
+# See also (perhaps for new versions?)
+#    http://0pointer.de/cgi-bin/viewcvs.cgi/trunk/common/acx_pthread.m4
+
+dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+dnl
+dnl @summary figure out how to build C programs using POSIX threads
+dnl
+dnl This macro figures out how to build C programs using POSIX threads.
+dnl It sets the PTHREAD_LIBS output variable to the threads library and
+dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
+dnl C compiler flags that are needed. (The user can also force certain
+dnl compiler flags/libs to be tested by setting these environment
+dnl variables.)
+dnl
+dnl Also sets PTHREAD_CC to any special C compiler that is needed for
+dnl multi-threaded programs (defaults to the value of CC otherwise).
+dnl (This is necessary on AIX to use the special cc_r compiler alias.)
+dnl
+dnl NOTE: You are assumed to not only compile your program with these
+dnl flags, but also link it with them as well. e.g. you should link
+dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
+dnl $LIBS
+dnl
+dnl If you are only building threads programs, you may wish to use
+dnl these variables in your default LIBS, CFLAGS, and CC:
+dnl
+dnl        LIBS="$PTHREAD_LIBS $LIBS"
+dnl        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+dnl        CC="$PTHREAD_CC"
+dnl
+dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
+dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
+dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+dnl
+dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
+dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
+dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
+dnl default action will define HAVE_PTHREAD.
+dnl
+dnl Please let the authors know if this macro fails on any platform, or
+dnl if you have any other suggestions or comments. This macro was based
+dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
+dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
+dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
+dnl We are also grateful for the helpful feedback of numerous users.
+dnl
+dnl @category InstalledPackages
+dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
+dnl @version 2005-06-15
+dnl @license GPLWithACException
+dnl 
+dnl Checks for GCC shared/pthread inconsistency based on work by
+dnl Marcin Owsiany <marcin@owsiany.pl>
+
+
+AC_DEFUN([ACX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_SAVE
+AC_LANG_C
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
+        AC_MSG_RESULT($acx_pthread_ok)
+        if test x"$acx_pthread_ok" = xno; then
+                PTHREAD_LIBS=""
+                PTHREAD_CFLAGS=""
+        fi
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try.  Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important.  Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+#       other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+#      doesn't hurt to check since this sometimes defines pthreads too;
+#      also defines -D_REENTRANT)
+#      ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+        *solaris*)
+
+        # On Solaris (at least, for some versions), libc contains stubbed
+        # (non-functional) versions of the pthreads routines, so link-based
+        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
+        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
+        # a function called by this macro, so we could check for that, but
+        # who knows whether they'll stub that too in a future libc.)  So,
+        # we'll just look for -pthreads and -lpthread first:
+
+        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+        ;;
+esac
+
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
+
+        case $flag in
+                none)
+                AC_MSG_CHECKING([whether pthreads work without any flags])
+                ;;
+
+                -*)
+                AC_MSG_CHECKING([whether pthreads work with $flag])
+                PTHREAD_CFLAGS="$flag"
+                ;;
+
+		pthread-config)
+		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
+		if test x"$acx_pthread_config" = xno; then continue; fi
+		PTHREAD_CFLAGS="`pthread-config --cflags`"
+		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+		;;
+
+                *)
+                AC_MSG_CHECKING([for the pthreads library -l$flag])
+                PTHREAD_LIBS="-l$flag"
+                ;;
+        esac
+
+        save_LIBS="$LIBS"
+        save_CFLAGS="$CFLAGS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Check for various functions.  We must include pthread.h,
+        # since some functions may be macros.  (On the Sequent, we
+        # need a special flag -Kthread to make this header compile.)
+        # We check for pthread_join because it is in -lpthread on IRIX
+        # while pthread_create is in libc.  We check for pthread_attr_init
+        # due to DEC craziness with -lpthreads.  We check for
+        # pthread_cleanup_push because it is one of the few pthread
+        # functions on Solaris that doesn't have a non-functional libc stub.
+        # We try pthread_create on general principles.
+        AC_TRY_LINK([#include <pthread.h>],
+                    [pthread_t th; pthread_join(th, 0);
+                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
+                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+                    [acx_pthread_ok=yes])
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        AC_MSG_RESULT($acx_pthread_ok)
+        if test "x$acx_pthread_ok" = xyes; then
+                break;
+        fi
+
+        PTHREAD_LIBS=""
+        PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+	AC_MSG_CHECKING([for joinable pthread attribute])
+	attr_name=unknown
+	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
+                        [attr_name=$attr; break])
+	done
+        AC_MSG_RESULT($attr_name)
+        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
+                               [Define to necessary symbol if this constant
+                                uses a non-standard name on your system.])
+        fi
+
+        AC_MSG_CHECKING([if more special flags are required for pthreads])
+        flag=no
+        case "${host_cpu}-${host_os}" in
+            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+        esac
+        AC_MSG_RESULT(${flag})
+        if test "x$flag" != xno; then
+            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+        fi
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        # More AIX lossage: must compile with cc_r
+        AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
+
+   # The next part tries to detect GCC inconsistency with -shared on some
+   # architectures and systems. The problem is that in certain
+   # configurations, when -shared is specified, GCC "forgets" to
+   # internally use various flags which are still necessary.
+   
+   # First, check whether caller wants us to skip -shared checks
+   # this is useful
+   AC_MSG_CHECKING([whether to check for GCC pthread/shared inconsistencies])
+   if test x"$GCC" != xyes; then
+      AC_MSG_RESULT([no])
+   else
+      AC_MSG_RESULT([yes])
+
+      # In order not to create several levels of indentation, we test
+      # the value of "$ok" until we find out the cure or run out of
+      # ideas.
+      ok="no"
+
+      #
+      # Prepare the flags
+      #
+      save_CFLAGS="$CFLAGS"
+      save_LIBS="$LIBS"
+      save_CC="$CC"
+      # Try with the flags determined by the earlier checks.
+      #
+      # -Wl,-z,defs forces link-time symbol resolution, so that the
+      # linking checks with -shared actually have any value
+      #
+      # FIXME: -fPIC is required for -shared on many architectures,
+      # so we specify it here, but the right way would probably be to
+      # properly detect whether it is actually required.
+      CFLAGS="-shared -fPIC -Wl,-z,defs $CFLAGS $PTHREAD_CFLAGS"
+      LIBS="$PTHREAD_LIBS $LIBS"
+      CC="$PTHREAD_CC"
+
+      AC_MSG_CHECKING([whether -pthread is sufficient with -shared])
+      AC_TRY_LINK([#include <pthread.h>],
+         [pthread_t th; pthread_join(th, 0);
+         pthread_attr_init(0); pthread_cleanup_push(0, 0);
+         pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+         [ok=yes])
+      
+      if test "x$ok" = xyes; then
+         AC_MSG_RESULT([yes])
+      else
+         AC_MSG_RESULT([no])
+      fi
+   
+      #
+      # Linux gcc on some architectures such as mips/mipsel forgets
+      # about -lpthread
+      #
+      if test x"$ok" = xno; then
+         AC_MSG_CHECKING([whether -lpthread fixes that])
+         LIBS="-lpthread $PTHREAD_LIBS $save_LIBS"
+         AC_TRY_LINK([#include <pthread.h>],
+            [pthread_t th; pthread_join(th, 0);
+            pthread_attr_init(0); pthread_cleanup_push(0, 0);
+            pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+            [ok=yes])
+   
+         if test "x$ok" = xyes; then
+            AC_MSG_RESULT([yes])
+            PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
+         else
+            AC_MSG_RESULT([no])
+         fi
+      fi
+      #
+      # FreeBSD 4.10 gcc forgets to use -lc_r instead of -lc
+      #
+      if test x"$ok" = xno; then
+         AC_MSG_CHECKING([whether -lc_r fixes that])
+         LIBS="-lc_r $PTHREAD_LIBS $save_LIBS"
+         AC_TRY_LINK([#include <pthread.h>],
+             [pthread_t th; pthread_join(th, 0);
+              pthread_attr_init(0); pthread_cleanup_push(0, 0);
+              pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+             [ok=yes])
+   
+         if test "x$ok" = xyes; then
+            AC_MSG_RESULT([yes])
+            PTHREAD_LIBS="-lc_r $PTHREAD_LIBS"
+         else
+            AC_MSG_RESULT([no])
+         fi
+      fi
+      if test x"$ok" = xno; then
+         # OK, we have run out of ideas
+         AC_MSG_WARN([Impossible to determine how to use pthreads with shared libraries])
+
+         # so it's not safe to assume that we may use pthreads
+         acx_pthread_ok=no
+      fi
+
+      CFLAGS="$save_CFLAGS"
+      LIBS="$save_LIBS"
+      CC="$save_CC"
+   fi
+else
+        PTHREAD_CC="$CC"
+fi
+
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_CC)
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
+        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
+        :
+else
+        acx_pthread_ok=no
+        $2
+fi
+AC_LANG_RESTORE
+])dnl ACX_PTHREAD
diff --git a/m4/google_namespace.m4 b/m4/google_namespace.m4
new file mode 100644
index 0000000..79e0a6d
--- /dev/null
+++ b/m4/google_namespace.m4
@@ -0,0 +1,36 @@
+# Allow users to override the namespace we define our application's classes in
+# Arg $1 is the default namespace to use if --enable-namespace isn't present.
+
+# In general, $1 should be 'google', so we put all our exported symbols in a
+# unique namespace that is not likely to conflict with anyone else.  However,
+# when it makes sense -- for instance, when publishing stl-like code -- you
+# may want to go with a different default, like 'std'.
+
+AC_DEFUN([AC_DEFINE_GOOGLE_NAMESPACE],
+  [google_namespace_default=[$1]
+   AC_ARG_ENABLE(namespace, [  --enable-namespace=FOO to define these Google
+                             classes in the FOO namespace. --disable-namespace
+                             to define them in the global namespace. Default
+                             is to define them in namespace $1.],
+                 [case "$enableval" in
+                    yes) google_namespace="$google_namespace_default" ;;
+                     no) google_namespace="" ;;
+                      *) google_namespace="$enableval" ;;
+                  esac],
+                 [google_namespace="$google_namespace_default"])
+   if test -n "$google_namespace"; then
+     ac_google_namespace="$google_namespace"
+     ac_google_start_namespace="namespace $google_namespace {"
+     ac_google_end_namespace="}"
+   else
+     ac_google_namespace=""
+     ac_google_start_namespace=""
+     ac_google_end_namespace=""
+   fi
+   AC_DEFINE_UNQUOTED(GOOGLE_NAMESPACE, $ac_google_namespace,
+                      Namespace for Google classes)
+   AC_DEFINE_UNQUOTED(_START_GOOGLE_NAMESPACE_, $ac_google_start_namespace,
+                      Puts following code inside the Google namespace)
+   AC_DEFINE_UNQUOTED(_END_GOOGLE_NAMESPACE_,  $ac_google_end_namespace,
+                      Stops putting the code inside the Google namespace)
+])
diff --git a/m4/namespaces.m4 b/m4/namespaces.m4
new file mode 100644
index 0000000..d78dbe4
--- /dev/null
+++ b/m4/namespaces.m4
@@ -0,0 +1,15 @@
+# Checks whether the compiler implements namespaces
+AC_DEFUN([AC_CXX_NAMESPACES],
+ [AC_CACHE_CHECK(whether the compiler implements namespaces,
+                 ac_cv_cxx_namespaces,
+                 [AC_LANG_SAVE
+                  AC_LANG_CPLUSPLUS
+                  AC_TRY_COMPILE([namespace Outer {
+                                    namespace Inner { int i = 0; }}],
+                                 [using namespace Outer::Inner; return i;],
+                                 ac_cv_cxx_namespaces=yes,
+                                 ac_cv_cxx_namespaces=no)
+                  AC_LANG_RESTORE])
+  if test "$ac_cv_cxx_namespaces" = yes; then
+    AC_DEFINE(HAVE_NAMESPACES, 1, [define if the compiler implements namespaces])
+  fi])
diff --git a/m4/stl_namespace.m4 b/m4/stl_namespace.m4
new file mode 100644
index 0000000..989ad80
--- /dev/null
+++ b/m4/stl_namespace.m4
@@ -0,0 +1,25 @@
+# We check what namespace stl code like vector expects to be executed in
+
+AC_DEFUN([AC_CXX_STL_NAMESPACE],
+  [AC_CACHE_CHECK(
+      what namespace STL code is in,
+      ac_cv_cxx_stl_namespace,
+      [AC_REQUIRE([AC_CXX_NAMESPACES])
+      AC_LANG_SAVE
+      AC_LANG_CPLUSPLUS
+      AC_TRY_COMPILE([#include <vector>],
+                     [vector<int> t; return 0;],
+                     ac_cv_cxx_stl_namespace=none)
+      AC_TRY_COMPILE([#include <vector>],
+                     [std::vector<int> t; return 0;],
+                     ac_cv_cxx_stl_namespace=std)
+      AC_LANG_RESTORE])
+   if test "$ac_cv_cxx_stl_namespace" = none; then
+      AC_DEFINE(STL_NAMESPACE,,
+                [the namespace where STL code like vector<> is defined])
+   fi
+   if test "$ac_cv_cxx_stl_namespace" = std; then
+      AC_DEFINE(STL_NAMESPACE,std,
+                [the namespace where STL code like vector<> is defined])
+   fi
+])
diff --git a/missing b/missing
index 6a37006..894e786 100755
--- a/missing
+++ b/missing
@@ -1,6 +1,10 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.
-# Copyright (C) 1996, 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
+
+scriptversion=2005-06-08.21
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005
+#   Free Software Foundation, Inc.
 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify
@@ -15,8 +19,8 @@
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -38,18 +42,24 @@
   configure_ac=configure.in
 fi
 
+msg="missing on your system"
+
 case "$1" in
 --run)
   # Try to run requested program, and just exit if it succeeds.
   run=
   shift
   "$@" && exit 0
+  # Exit code 63 means version mismatch.  This often happens
+  # when the user try to use an ancient version of a tool on
+  # a file that requires a minimum version.  In this case we
+  # we should proceed has if the program had been absent, or
+  # if --run hadn't been passed.
+  if test $? = 63; then
+    run=:
+    msg="probably too old"
+  fi
   ;;
-esac
-
-# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
-case "$1" in
 
   -h|--h|--he|--hel|--help)
     echo "\
@@ -74,11 +84,15 @@
   lex          create \`lex.yy.c', if possible, from existing .c
   makeinfo     touch the output file
   tar          try tar, gnutar, gtar, then tar without non-portable flags
-  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]"
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
     ;;
 
   -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
-    echo "missing 0.4 - GNU automake"
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
     ;;
 
   -*)
@@ -87,14 +101,44 @@
     exit 1
     ;;
 
-  aclocal*)
+esac
+
+# Now exit if we have it, but it failed.  Also exit now if we
+# don't have it and --version was passed (most likely to detect
+# the program).
+case "$1" in
+  lex|yacc)
+    # Not GNU programs, they don't have --version.
+    ;;
+
+  tar)
+    if test -n "$run"; then
+       echo 1>&2 "ERROR: \`tar' requires --run"
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       exit 1
+    fi
+    ;;
+
+  *)
     if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
        # We have it, but it failed.
        exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       # Could not run --version or --help.  This is probably someone
+       # running `$TOOL --version' or `$TOOL --help' to check whether
+       # $TOOL exists and not knowing $TOOL uses missing.
+       exit 1
     fi
+    ;;
+esac
 
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case "$1" in
+  aclocal*)
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
          to install the \`Automake' and \`Perl' packages.  Grab them from
          any GNU archive site."
@@ -102,13 +146,8 @@
     ;;
 
   autoconf)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`${configure_ac}'.  You might want to install the
          \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
          archive site."
@@ -116,13 +155,8 @@
     ;;
 
   autoheader)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`acconfig.h' or \`${configure_ac}'.  You might want
          to install the \`Autoconf' and \`GNU m4' packages.  Grab them
          from any GNU archive site."
@@ -140,13 +174,8 @@
     ;;
 
   automake*)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
          You might want to install the \`Automake' and \`Perl' packages.
          Grab them from any GNU archive site."
@@ -156,16 +185,11 @@
     ;;
 
   autom4te)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
     echo 1>&2 "\
-WARNING: \`$1' is needed, and you do not seem to have it handy on your
-         system.  You might have modified some files without having the
+WARNING: \`$1' is needed, but is $msg.
+         You might have modified some files without having the
          proper tools for further handling them.
-         You can get \`$1Help2man' as part of \`Autoconf' from any GNU
+         You can get \`$1' as part of \`Autoconf' from any GNU
          archive site."
 
     file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
@@ -185,7 +209,7 @@
 
   bison|yacc)
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' $msg.  You should only need it if
          you modified a \`.y' file.  You may need the \`Bison' package
          in order for those modifications to take effect.  You can get
          \`Bison' from any GNU archive site."
@@ -215,7 +239,7 @@
 
   lex|flex)
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
          you modified a \`.l' file.  You may need the \`Flex' package
          in order for those modifications to take effect.  You can get
          \`Flex' from any GNU archive site."
@@ -237,13 +261,8 @@
     ;;
 
   help2man)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
 	 you modified a dependency of a manual page.  You may need the
 	 \`Help2man' package in order for those modifications to take
 	 effect.  You can get \`Help2man' from any GNU archive site."
@@ -262,32 +281,30 @@
     ;;
 
   makeinfo)
-    if test -z "$run" && (makeinfo --version) > /dev/null 2>&1; then
-       # We have makeinfo, but it failed.
-       exit 1
-    fi
-
     echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
          you modified a \`.texi' or \`.texinfo' file, or any other file
          indirectly affecting the aspect of the manual.  The spurious
          call might also be the consequence of using a buggy \`make' (AIX,
          DU, IRIX).  You might want to install the \`Texinfo' package or
          the \`GNU make' package.  Grab either from any GNU archive site."
+    # The file to touch is that specified with -o ...
     file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
     if test -z "$file"; then
-      file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
-      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
+      # ... or it is the one specified with @setfilename ...
+      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $infile`
+      # ... or it is derived from the source name (dir/f.texi becomes f.info)
+      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
     fi
+    # If the file does not exist, the user really needs makeinfo;
+    # let's fail without touching anything.
+    test -f $file || exit 1
     touch $file
     ;;
 
   tar)
     shift
-    if test -n "$run"; then
-      echo 1>&2 "ERROR: \`tar' requires --run"
-      exit 1
-    fi
 
     # We have already tried tar in the generic part.
     # Look for gnutar/gtar before invocation to avoid ugly error
@@ -323,10 +340,10 @@
 
   *)
     echo 1>&2 "\
-WARNING: \`$1' is needed, and you do not seem to have it handy on your
-         system.  You might have modified some files without having the
+WARNING: \`$1' is needed, and is $msg.
+         You might have modified some files without having the
          proper tools for further handling them.  Check the \`README' file,
-         it often tells you about the needed prerequirements for installing
+         it often tells you about the needed prerequisites for installing
          this package.  You may also peek at any GNU archive site, in case
          some other package would contain this missing \`$1' program."
     exit 1
@@ -334,3 +351,10 @@
 esac
 
 exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/mkinstalldirs b/mkinstalldirs
index 8ab885e..259dbfc 100755
--- a/mkinstalldirs
+++ b/mkinstalldirs
@@ -1,29 +1,56 @@
 #! /bin/sh
 # mkinstalldirs --- make directory hierarchy
-# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+
+scriptversion=2005-06-29.22
+
+# Original author: Noah Friedman <friedman@prep.ai.mit.edu>
 # Created: 1993-05-16
-# Public domain
+# Public domain.
+#
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
 
 errstatus=0
-dirmode=""
+dirmode=
 
 usage="\
-Usage: mkinstalldirs [-h] [--help] [-m mode] dir ..."
+Usage: mkinstalldirs [-h] [--help] [--version] [-m MODE] DIR ...
+
+Create each directory DIR (with mode MODE, if specified), including all
+leading file name components.
+
+Report bugs to <bug-automake@gnu.org>."
 
 # process command line arguments
 while test $# -gt 0 ; do
-   case "${1}" in
-     -h | --help | --h* )			# -h for help
-	echo "${usage}" 1>&2; exit 0 ;;
-     -m )					# -m PERM arg
-	shift
-	test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
-	dirmode="${1}"
-	shift ;;
-     -- ) shift; break ;;			# stop option processing
-     -* ) echo "${usage}" 1>&2; exit 1 ;;	# unknown option
-     * )  break ;;				# first non-opt arg
-   esac
+  case $1 in
+    -h | --help | --h*)         # -h for help
+      echo "$usage"
+      exit $?
+      ;;
+    -m)                         # -m PERM arg
+      shift
+      test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
+      dirmode=$1
+      shift
+      ;;
+    --version)
+      echo "$0 $scriptversion"
+      exit $?
+      ;;
+    --)                         # stop option processing
+      shift
+      break
+      ;;
+    -*)                         # unknown option
+      echo "$usage" 1>&2
+      exit 1
+      ;;
+    *)                          # first non-opt arg
+      break
+      ;;
+  esac
 done
 
 for file
@@ -36,64 +63,96 @@
 done
 
 case $# in
-0) exit 0 ;;
+  0) exit 0 ;;
 esac
 
+# Solaris 8's mkdir -p isn't thread-safe.  If you mkdir -p a/b and
+# mkdir -p a/c at the same time, both will detect that a is missing,
+# one will create a, then the other will try to create a and die with
+# a "File exists" error.  This is a problem when calling mkinstalldirs
+# from a parallel make.  We use --version in the probe to restrict
+# ourselves to GNU mkdir, which is thread-safe.
 case $dirmode in
-'')
-  if mkdir -p -- . 2>/dev/null; then
-    echo "mkdir -p -- $*"
-    exec mkdir -p -- "$@"
-  fi ;;
-*)
-  if mkdir -m "$dirmode" -p -- . 2>/dev/null; then
-    echo "mkdir -m $dirmode -p -- $*"
-    exec mkdir -m "$dirmode" -p -- "$@"
-  fi ;;
+  '')
+    if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
+      echo "mkdir -p -- $*"
+      exec mkdir -p -- "$@"
+    else
+      # On NextStep and OpenStep, the `mkdir' command does not
+      # recognize any option.  It will interpret all options as
+      # directories to create, and then abort because `.' already
+      # exists.
+      test -d ./-p && rmdir ./-p
+      test -d ./--version && rmdir ./--version
+    fi
+    ;;
+  *)
+    if mkdir -m "$dirmode" -p --version . >/dev/null 2>&1 &&
+       test ! -d ./--version; then
+      echo "mkdir -m $dirmode -p -- $*"
+      exec mkdir -m "$dirmode" -p -- "$@"
+    else
+      # Clean up after NextStep and OpenStep mkdir.
+      for d in ./-m ./-p ./--version "./$dirmode";
+      do
+        test -d $d && rmdir $d
+      done
+    fi
+    ;;
 esac
 
 for file
 do
-   set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
-   shift
+  case $file in
+    /*) pathcomp=/ ;;
+    *)  pathcomp= ;;
+  esac
+  oIFS=$IFS
+  IFS=/
+  set fnord $file
+  shift
+  IFS=$oIFS
 
-   pathcomp=
-   for d
-   do
-     pathcomp="$pathcomp$d"
-     case "$pathcomp" in
-       -* ) pathcomp=./$pathcomp ;;
-     esac
+  for d
+  do
+    test "x$d" = x && continue
 
-     if test ! -d "$pathcomp"; then
-	echo "mkdir $pathcomp"
+    pathcomp=$pathcomp$d
+    case $pathcomp in
+      -*) pathcomp=./$pathcomp ;;
+    esac
 
-	mkdir "$pathcomp" || lasterr=$?
+    if test ! -d "$pathcomp"; then
+      echo "mkdir $pathcomp"
 
-	if test ! -d "$pathcomp"; then
-	  errstatus=$lasterr
-	else
-	  if test ! -z "$dirmode"; then
-	     echo "chmod $dirmode $pathcomp"
+      mkdir "$pathcomp" || lasterr=$?
 
-	     lasterr=""
-	     chmod "$dirmode" "$pathcomp" || lasterr=$?
+      if test ! -d "$pathcomp"; then
+	errstatus=$lasterr
+      else
+	if test ! -z "$dirmode"; then
+	  echo "chmod $dirmode $pathcomp"
+	  lasterr=
+	  chmod "$dirmode" "$pathcomp" || lasterr=$?
 
-	     if test ! -z "$lasterr"; then
-	       errstatus=$lasterr
-	     fi
+	  if test ! -z "$lasterr"; then
+	    errstatus=$lasterr
 	  fi
 	fi
-     fi
+      fi
+    fi
 
-     pathcomp="$pathcomp/"
-   done
+    pathcomp=$pathcomp/
+  done
 done
 
 exit $errstatus
 
 # Local Variables:
 # mode: shell-script
-# sh-indentation: 3
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
 # End:
-# mkinstalldirs ends here
diff --git a/packages/deb/changelog b/packages/deb/changelog
index 59ba835..571c73b 100644
--- a/packages/deb/changelog
+++ b/packages/deb/changelog
@@ -1,27 +1,24 @@
+google-gflags (0.5-1) unstable; urgency=low
+
+  * New upstream release.
+
+ -- Google Inc. <opensource@google.com>  Tue, 12 Jun 2007 15:23:42 -0700
+
 google-gflags (0.4-1) unstable; urgency=low
 
-  * google-gflags: version 0.4
-  * Remove is_default from GetCommandLineFlagInfo (csilvers)
-  * Portability fixes: includes, strtoll, gcc4.3 errors (csilvers)
-  * A few doc typo cleanups (csilvers)
+  * New upstream release.
 
  -- Google Inc. <opensource@google.com>  Thu, 19 Apr 2007 15:18:43 -0700
 
 google-gflags (0.3-1) unstable; urgency=low
 
-  * google-gflags: version 0.2
-  * added support for python commandlineflags, as well as c++
-  * gflags2man, a script to turn flags into a man page (dchristian)
+  * New upstream release.
 
  -- Google Inc. <opensource@google.com>  Mon, 22 Jan 2007 15:33:06 -0800
 
 google-gflags (0.2-1) unstable; urgency=low
 
-  * google-gflags: version 0.3
-  * python portability fix: use popen instead of subprocess (csilvers)
-  * Add is_default to CommandLineFlagInfo (pchien)
-  * Make docs a bit prettier (csilvers)
-  * Actually include the python files in the distribution! :-/ (csilvers)
+  * New upstream release.
 
  -- Google Inc. <opensource@google.com>  Wed, 28 Mar 2007 12:15:56 -0700
 
diff --git a/python/gflags.py b/python/gflags.py
index 257b6f5..ee9bc97 100755
--- a/python/gflags.py
+++ b/python/gflags.py
@@ -820,13 +820,15 @@
     self.default_as_str = self.__GetParsedValueAsString(self.value)
 
   def __GetParsedValueAsString(self, value):
+    if value is None:
+      return None
+    if self.serializer:
+      return repr(self.serializer.Serialize(value))
     if self.boolean:
       if value:
         return repr('true')
       else:
         return repr('false')
-    if value is None:
-      return None
     return repr(str(value))
 
   def Parse(self, argument):
@@ -837,7 +839,9 @@
     self.present += 1
 
   def Unparse(self):
-    if self.default != None:
+    if self.default is None:
+      self.value = None
+    else:
       self.Parse(self.default)
     self.present = 0
 
@@ -858,7 +862,7 @@
     """
     Change the default value, and current value, of this flag object
     """
-    if value:     # See __init__ for logic details
+    if value is not None:     # See __init__ for logic details
       self.Parse(value)
       self.present -= 1 # reset .present after parsing new default value
     else:
@@ -995,8 +999,7 @@
   """
   def __init__(self, name, default, help, short_name=None, **args):
     p = BooleanParser()
-    g = ArgumentSerializer()
-    Flag.__init__(self, p, g, name, default, help, short_name, 1, **args)
+    Flag.__init__(self, p, None, name, default, help, short_name, 1, **args)
     if not self.help: self.help = "a boolean value"
 
 def DEFINE_boolean(name, default, help, flag_values=FLAGS, **args):
diff --git a/python/gflags_unittest.py b/python/gflags_unittest.py
index d55a26a..342a557 100755
--- a/python/gflags_unittest.py
+++ b/python/gflags_unittest.py
@@ -48,7 +48,7 @@
   "Flags Unit Test"
 
   def test_flags(self):
-    
+
     ##############################################
     # Test normal usage with no (expected) errors.
 
@@ -64,13 +64,28 @@
     flags.DEFINE_boolean("noexec", 1, "boolean flag with no as prefix")
     flags.DEFINE_integer("x", 3, "how eXtreme to be")
     flags.DEFINE_integer("l", 0x7fffffff00000000L, "how long to be")
+    flags.DEFINE_list('letters', 'a,b,c', "a list of letters")
+    flags.DEFINE_enum("kwery", None, ['who', 'what', 'why', 'where', 'when'],
+                      "?")
+
+    # Specify number of flags defined above.  The short_name defined
+    # for 'repeat' counts as an extra flag.
+    number_defined_flags = 10 + 1
+    self.assertEqual(len(FLAGS.RegisteredFlags()),
+                         number_defined_flags + number_test_framework_flags)
+
     assert FLAGS.repeat == 4, "integer default values not set:" + FLAGS.repeat
     assert FLAGS.name == 'Bob', "default values not set:" + FLAGS.name
     assert FLAGS.debug == 0, "boolean default values not set:" + FLAGS.debug
     assert FLAGS.q == 1, "boolean default values not set:" + FLAGS.q
     assert FLAGS.x == 3, "integer default values not set:" + FLAGS.x
-    assert FLAGS.l == 0x7fffffff00000000L, "integer default values not set:" + FLAGS.l
-    
+    assert FLAGS.l == 0x7fffffff00000000L, ("integer default values not set:"
+                                            + FLAGS.l)
+    assert FLAGS.letters == ['a', 'b', 'c'], "list default values not set:" \
+      + FLAGS.letters
+    assert FLAGS.kwery is None, ("enum default None value not set:"
+                                  + FLAGS.kwery)
+
     flag_values = FLAGS.FlagValuesDict()
     assert flag_values['repeat'] == 4
     assert flag_values['name'] == 'Bob'
@@ -80,6 +95,8 @@
     assert flag_values['quack'] == 0
     assert flag_values['x'] == 3
     assert flag_values['l'] == 0x7fffffff00000000L
+    assert flag_values['letters'] == ['a', 'b', 'c']
+    assert flag_values['kwery'] is None
 
     # Verify string form of defaults
     assert FLAGS['repeat'].default_as_str == "'4'"
@@ -90,6 +107,7 @@
     assert FLAGS['noexec'].default_as_str == "'true'"
     assert FLAGS['x'].default_as_str == "'3'"
     assert FLAGS['l'].default_as_str == "'9223372032559808512'"
+    assert FLAGS['letters'].default_as_str == "'a,b,c'"
 
     # Verify that the iterator for flags yields all the keys
     keys = list(FLAGS)
@@ -97,7 +115,7 @@
     reg_flags = FLAGS.RegisteredFlags()
     reg_flags.sort()
     self.assertEqual(keys, reg_flags)
-    
+
     # Parse flags
     # .. empty command line
     argv = ('./program',)
@@ -120,8 +138,8 @@
     FLAGS['x'].present = 0 # Reset
 
     # Flags list
-    
-    assert len(FLAGS.RegisteredFlags()) == 9 + number_test_framework_flags
+    self.assertEqual(len(FLAGS.RegisteredFlags()),
+                     number_defined_flags + number_test_framework_flags)
     assert 'name' in FLAGS.RegisteredFlags()
     assert 'debug' in FLAGS.RegisteredFlags()
     assert 'repeat' in FLAGS.RegisteredFlags()
@@ -130,6 +148,7 @@
     assert 'quack' in FLAGS.RegisteredFlags()
     assert 'x' in FLAGS.RegisteredFlags()
     assert 'l' in FLAGS.RegisteredFlags()
+    assert 'letters' in FLAGS.RegisteredFlags()
 
     # has_key
     assert FLAGS.has_key('name')
@@ -139,7 +158,8 @@
 
     # try deleting a flag
     del FLAGS.r
-    assert len(FLAGS.RegisteredFlags()) == 8 + number_test_framework_flags
+    self.assertEqual(len(FLAGS.RegisteredFlags()),
+                     number_defined_flags - 1 + number_test_framework_flags)
     assert not 'r' in FLAGS.RegisteredFlags()
 
     # .. command line with extra stuff
@@ -164,6 +184,17 @@
     assert FLAGS['debug'].present == 0
     assert FLAGS['debug'].value == False
 
+    # Test that reset restores default value when default value is None.
+    argv = ('./program', '--kwery=who')
+    argv = FLAGS(argv)
+    assert len(argv) == 1, "wrong number of arguments pulled"
+    assert argv[0] == './program', "program name not preserved"
+    assert FLAGS['kwery'].present == 1
+    assert FLAGS['kwery'].value == 'who'
+    FLAGS.Reset()
+    assert FLAGS['kwery'].present == 0
+    assert FLAGS['kwery'].value == None
+
     # Test integer argument passing
     argv = ('./program', '--x', '0x12345')
     argv = FLAGS(argv)
@@ -265,17 +296,17 @@
     # test list code
     lists = [['hello','moo','boo','1'],
              [],]
-            
+
     flags.DEFINE_list('testlist', '', 'test lists parsing')
     flags.DEFINE_spaceseplist('testspacelist', '', 'tests space lists parsing')
 
-    for name, sep in (('testlist', ','), ('testspacelist', ' '), 
+    for name, sep in (('testlist', ','), ('testspacelist', ' '),
                       ('testspacelist', '\n')):
       for lst in lists:
         argv = ('./program', '--%s=%s' % (name, sep.join(lst)))
         argv = FLAGS(argv)
         self.assertEquals(getattr(FLAGS, name), lst)
-   
+
     # Test help text
     flagsHelp = str(FLAGS)
     assert flagsHelp.find("repeat") != -1, "cannot find flag in help"
@@ -292,19 +323,19 @@
                              'string option that can occur multiple times',
                              short_name='s')
     self.assertEqual(FLAGS.get('s_str', None), [ 'sing1', ])
-    
+
     # Test MultiFlag with list of default values
     multi_string_defs = [ 'def1', 'def2', ]
     flags.DEFINE_multistring('m_str', multi_string_defs,
                              'string option that can occur multiple times',
                              short_name='m')
     self.assertEqual(FLAGS.get('m_str', None), multi_string_defs)
-    
+
     # Test flag specified multiple times with a MultiFlag
     argv = ('./program', '--m_str=str1', '-m', 'str2')
     argv = FLAGS(argv)
     self.assertEqual(FLAGS.get('m_str', None), [ 'str1', 'str2', ])
-    
+
     # Test single-letter flags; should support both single and double dash
     argv = ('./program', '-q', '-x8')
     argv = FLAGS(argv)
@@ -329,7 +360,7 @@
 
     oldtestlist = FLAGS.testlist
     oldtestspacelist = FLAGS.testspacelist
-    
+
     argv = ('./program',
             FLAGS['test0'].Serialize(),
             FLAGS['test1'].Serialize(),
@@ -347,7 +378,7 @@
     FLAGS.testspacelist = list(testspacelist1)
     argv = ('./program',
             FLAGS['testlist'].Serialize(),
-            FLAGS['testspacelist'].Serialize())    
+            FLAGS['testspacelist'].Serialize())
     argv = FLAGS(argv)
     self.assertEqual(FLAGS.testlist, testlist1)
     self.assertEqual(FLAGS.testspacelist, testspacelist1)
@@ -371,6 +402,7 @@
 
     def ArgsString():
       flagnames = FLAGS.RegisteredFlags()
+
       flagnames.sort()
       nonbool_flags = ['--%s %s' % (name, FLAGS.get(name, None))
                       for name in flagnames
@@ -392,7 +424,9 @@
     self.assertEqual(FLAGS.get('name', None), 'giants')
     self.assertEqual(FLAGS.get('debug', None), 0)
     self.assertEqual(ArgsString(),
+      "--kwery None "
       "--l 9223372032559808512 "
+      "--letters ['a', 'b', 'c'] "
       "--m ['str1', 'str2'] --m_str ['str1', 'str2'] " 
       "--name giants " 
       "--repeat 3 " 
@@ -414,11 +448,13 @@
     # items appended to existing non-default value lists for --m/--m_str
     # new value overwrites default value (not appended to it) for --s/--s_str
     self.assertEqual(ArgsString(),
+      "--kwery None "
       "--l 9223372032559808512 "
+      "--letters ['a', 'b', 'c'] "
       "--m ['str1', 'str2', 'upd1'] "
       "--m_str ['str1', 'str2', 'upd1'] "
-      "--name giants " 
-      "--repeat 3 " 
+      "--name giants "
+      "--repeat 3 "
       "--s ['upd2'] --s_str ['upd2'] "
       "--testget4 None --testlist [] "
       "--testspacelist [] --x 10 "
@@ -431,7 +467,7 @@
 
     ####################################
     # Test all kind of error conditions.
-    
+
     # Duplicate flag detection
     try:
       flags.DEFINE_boolean("run", 0, "runhelp", short_name='q')
@@ -543,13 +579,13 @@
       raise AssertionError("Illegal flag value exception not thrown")
     except flags.IllegalFlagValue:
       pass
-      
+
   ################################################
   # Code to test the flagfile=<> loading behavior
   ################################################
-  def _SetupTestFiles(self):  
+  def _SetupTestFiles(self):
     """ Creates and sets up some dummy flagfile files with bogus flags"""
-    
+
     # Figure out where to create temporary files
     tmp_path = '/tmp/flags_unittest'
     if os.path.exists(tmp_path):
@@ -557,14 +593,14 @@
     os.makedirs(tmp_path)
 
     try:
-      tmp_flag_file_1 = open((tmp_path + '/UnitTestFile1.tst'), 'w') 
+      tmp_flag_file_1 = open((tmp_path + '/UnitTestFile1.tst'), 'w')
       tmp_flag_file_2 = open((tmp_path + '/UnitTestFile2.tst'), 'w')
       tmp_flag_file_3 = open((tmp_path + '/UnitTestFile3.tst'), 'w')
     except IOError, e_msg:
       print e_msg
-      print 'FAIL\n File Creation problem in Unit Test' 
+      print 'FAIL\n File Creation problem in Unit Test'
       sys.exit(1)
-    
+
     # put some dummy flags in our test files
     tmp_flag_file_1.write('#A Fake Comment\n')
     tmp_flag_file_1.write('--UnitTestMessage1=tempFile1!\n')
@@ -585,37 +621,37 @@
     tmp_flag_file_3.write('#YAFC\n')
     tmp_flag_file_3.write('--UnitTestBoolFlag\n')
     file_list.append(tmp_flag_file_3.name)
-    
-    tmp_flag_file_1.close() 
+
+    tmp_flag_file_1.close()
     tmp_flag_file_2.close()
     tmp_flag_file_3.close()
 
     return file_list # these are just the file names
   # end SetupFiles def
-  
+
   def _RemoveTestFiles(self, tmp_file_list):
     """Closes the files we just created.  tempfile deletes them for us """
-    for file_name in tmp_file_list: 
+    for file_name in tmp_file_list:
       try:
-        os.remove(file_name) 
+        os.remove(file_name)
       except OSError, e_msg:
         print '%s\n, Problem deleting test file' % e_msg
   #end RemoveTestFiles def
-  
+
   def __DeclareSomeFlags(self):
     flags.DEFINE_string('UnitTestMessage1', 'Foo!', 'You Add Here.')
     flags.DEFINE_string('UnitTestMessage2', 'Bar!', 'Hello, Sailor!')
     flags.DEFINE_boolean('UnitTestBoolFlag', 0, 'Some Boolean thing')
     flags.DEFINE_integer('UnitTestNumber', 12345, 'Some integer',
                          lower_bound=0)
-  
-  def _UndeclareSomeFlags(self): 
+
+  def _UndeclareSomeFlags(self):
     FLAGS.__delattr__('UnitTestMessage1')
     FLAGS.__delattr__('UnitTestMessage2')
     FLAGS.__delattr__('UnitTestBoolFlag')
     FLAGS.__delattr__('UnitTestNumber')
-    
-  #### Flagfile Unit Tests ####  
+
+  #### Flagfile Unit Tests ####
   def testMethod_flagfiles_1(self):
     """ Test trivial case with no flagfile based options. """
     self.__DeclareSomeFlags()
@@ -626,7 +662,7 @@
     self.assertEqual( fake_argv, FLAGS.ReadFlagsFromFiles(fake_argv))
     self._UndeclareSomeFlags()
   # end testMethodOne
-  
+
   def testMethod_flagfiles_2(self):
     """Tests parsing one file + arguments off simulated argv"""
     self.__DeclareSomeFlags()
@@ -634,8 +670,8 @@
     # specify our temp file on the fake cmd line
     fake_cmd_line = 'fooScript --q --flagfile=%s' % tmp_files[0]
     fake_argv = fake_cmd_line.split(' ')
-    
-    # We should see the original cmd line with the file's contents spliced in. 
+
+    # We should see the original cmd line with the file's contents spliced in.
     # Note that these will be in REVERSE order from order encountered in file
     # This is done so arguements we encounter sooner will have priority.
     expected_results = ['fooScript',
@@ -644,8 +680,8 @@
                           '--noUnitTestBoolFlag',
                           '--q']
     test_results = FLAGS.ReadFlagsFromFiles(fake_argv)
-    self.assertEqual(expected_results, test_results) 
-    self._RemoveTestFiles(tmp_files)  
+    self.assertEqual(expected_results, test_results)
+    self._RemoveTestFiles(tmp_files)
     self._UndeclareSomeFlags()
   # end testTwo def
 
@@ -657,7 +693,7 @@
     fake_cmd_line = ('fooScript --UnitTestNumber=77 --flagfile=%s'
                      % tmp_files[1])
     fake_argv = fake_cmd_line.split(' ')
-    
+
     expected_results = ['fooScript',
                           '--UnitTestMessage1=tempFile1!',
                           '--UnitTestNumber=54321',
@@ -666,11 +702,11 @@
                           '--UnitTestNumber=6789a',
                           '--UnitTestNumber=77']
     test_results = FLAGS.ReadFlagsFromFiles(fake_argv)
-    self.assertEqual(expected_results, test_results) 
+    self.assertEqual(expected_results, test_results)
     self._RemoveTestFiles(tmp_files)
     self._UndeclareSomeFlags()
   # end testThree def
-    
+
   def testMethod_flagfiles_4(self):
     """Tests parsing self referetial files + arguments of simulated argv.
       This test should print a warning to stderr of some sort.
@@ -687,20 +723,20 @@
                           '--noUnitTestBoolFlag' ]
 
     test_results = FLAGS.ReadFlagsFromFiles(fake_argv)
-    self.assertEqual(expected_results, test_results) 
-    self._RemoveTestFiles(tmp_files)  
+    self.assertEqual(expected_results, test_results)
+    self._RemoveTestFiles(tmp_files)
     self._UndeclareSomeFlags()
 
   def test_flagfiles_user_path_expansion(self):
-    """Test that user directory referenced paths (ie. ~/foo) are correctly 
-      expanded.  This test depends on whatever account's running the unit test 
-      to have read/write access to their own home directory, otherwise it'll 
+    """Test that user directory referenced paths (ie. ~/foo) are correctly
+      expanded.  This test depends on whatever account's running the unit test
+      to have read/write access to their own home directory, otherwise it'll
       FAIL.
     """
     self.__DeclareSomeFlags()
     fake_flagfile_item_style_1 = '--flagfile=~/foo.file'
     fake_flagfile_item_style_2 = '-flagfile=~/foo.file'
-    
+
     expected_results = os.path.expanduser('~/foo.file')
 
     test_results = FLAGS.ExtractFilename(fake_flagfile_item_style_1)
@@ -737,12 +773,35 @@
     self.assertEqual(FLAGS['UnitTestMessage1'].default_as_str,"'New value'")
     FLAGS([ 'dummyscript', '--UnitTestMessage1=Newer value' ])
     self.assertEqual(FLAGS.UnitTestMessage1, 'Newer value')
+
     # Test that setting the default to None works correctly.
     FLAGS['UnitTestNumber'].SetDefault(None)
     self.assertEqual(FLAGS.UnitTestNumber, None)
     self.assertEqual(FLAGS['UnitTestNumber'].default_as_str, None)
     FLAGS([ 'dummyscript', '--UnitTestNumber=56' ])
     self.assertEqual(FLAGS.UnitTestNumber, 56)
+
+    # Test that setting the default to zero works correctly.
+    FLAGS['UnitTestNumber'].SetDefault(0)
+    self.assertEqual(FLAGS.UnitTestNumber, 0)
+    self.assertEqual(FLAGS['UnitTestNumber'].default_as_str, "'0'")
+    FLAGS([ 'dummyscript', '--UnitTestNumber=56' ])
+    self.assertEqual(FLAGS.UnitTestNumber, 56)
+
+    # Test that setting the default to "" works correctly.
+    FLAGS['UnitTestMessage1'].SetDefault("")
+    self.assertEqual(FLAGS.UnitTestMessage1, "")
+    self.assertEqual(FLAGS['UnitTestMessage1'].default_as_str, "''")
+    FLAGS([ 'dummyscript', '--UnitTestMessage1=fifty-six' ])
+    self.assertEqual(FLAGS.UnitTestMessage1, "fifty-six")
+
+    # Test that setting the default to false works correctly.
+    FLAGS['UnitTestBoolFlag'].SetDefault(False)
+    self.assertEqual(FLAGS.UnitTestBoolFlag, False)
+    self.assertEqual(FLAGS['UnitTestBoolFlag'].default_as_str, "'false'")
+    FLAGS([ 'dummyscript', '--UnitTestBoolFlag=true' ])
+    self.assertEqual(FLAGS.UnitTestBoolFlag, True)
+
     # Test that setting invalid defaults raises exceptions
     self.assertRaises(flags.IllegalFlagValue,
                       FLAGS['UnitTestNumber'].SetDefault, 'oops')
@@ -750,7 +809,7 @@
                       FLAGS['UnitTestNumber'].SetDefault, -1)
     self.assertRaises(flags.IllegalFlagValue,
                       FLAGS['UnitTestBoolFlag'].SetDefault, 'oops')
-    
+
     self._UndeclareSomeFlags()
 
   def testMethod_ShortestUniquePrefixes(self):
diff --git a/python/setup.py b/python/setup.py
index d9783ff..25660d0 100755
--- a/python/setup.py
+++ b/python/setup.py
@@ -32,11 +32,11 @@
 from distutils.core import setup
 
 setup(name='gflags',
-      version='0.4',
+      version='0.5',
       description='Google Commandline Flags Module',
       license='BSD',
       author='Google Inc.',
       author_email='opensource@google.com',
       url='http://code.google.com/p/google-gflags',
       py_modules=["gflags"],
-      data_files=["/usr/local/bin", "gflags2man.py"])
+      data_files=[("/usr/local/bin", ["gflags2man.py"])])
diff --git a/src/gflags.cc b/src/gflags.cc
index 55fb6d0..54956a3 100644
--- a/src/gflags.cc
+++ b/src/gflags.cc
@@ -1228,9 +1228,9 @@
     result = parser.ProcessSingleOptionLocked(flag, value, set_mode);
     if (!result.empty()) {   // in the error case, we've already logged
       // You could consider logging this change, if you wanted to know it:
-      //fprintf(stderr, "%sFLAGS_%s set to '%s'\n",
+      //fprintf(stderr, "%sFLAGS_%s\n",
       //        (set_mode == SET_FLAGS_DEFAULT ? "default value of " : ""),
-      //        name, value);
+      //        result);
     }
   }
   registry->Unlock();
@@ -1429,7 +1429,7 @@
 //    Reads the value from the environment and returns it.
 //    We use an FlagValue to make the parsing easy.
 //    Example usage:
-//       DEFINE_bool(myflag, BoolFromEnv("MYFLAG_DEFAULT"), "whatever");
+//       DEFINE_bool(myflag, BoolFromEnv("MYFLAG_DEFAULT", false), "whatever");
 // --------------------------------------------------------------------
 
 template<typename T>
diff --git a/src/gflags_unittest.cc b/src/gflags_unittest.cc
index f035a3a..b594581 100644
--- a/src/gflags_unittest.cc
+++ b/src/gflags_unittest.cc
@@ -110,10 +110,18 @@
 #define EXPECT_GT(val1, val2)  EXPECT_OP(>, val1, val2)
 #define EXPECT_LT(val1, val2)  EXPECT_OP(<, val1, val2)
 
-#define EXPECT_PRED1(pred, arg)                                 \
+#define EXPECT_NAN(arg)                                         \
   do {                                                          \
-    if (!((pred)(arg))) {                                       \
-      fprintf(stderr, "Check failed: %s(%s)\n", #pred, #arg);   \
+    if (!isnan(arg)) {                                          \
+      fprintf(stderr, "Check failed: isnan(%s)\n", #arg);       \
+      exit(1);                                                  \
+    }                                                           \
+  } while (0)
+
+#define EXPECT_INF(arg)                                         \
+  do {                                                          \
+    if (!isinf(arg)) {                                          \
+      fprintf(stderr, "Check failed: isinf(%s)\n", #arg);       \
       exit(1);                                                  \
     }                                                           \
   } while (0)
@@ -425,11 +433,11 @@
 TEST(SetFlagValueTest, ExceptionalValues) {
   EXPECT_EQ("test_double set to inf\n",
             SetCommandLineOption("test_double", "inf"));
-  EXPECT_PRED1(isinf, FLAGS_test_double);
+  EXPECT_INF(FLAGS_test_double);
 
   EXPECT_EQ("test_double set to inf\n",
             SetCommandLineOption("test_double", "INF"));
-  EXPECT_PRED1(isinf, FLAGS_test_double);
+  EXPECT_INF(FLAGS_test_double);
 
   // set some bad values
   EXPECT_EQ("",
@@ -440,12 +448,12 @@
             SetCommandLineOption("test_double", ""));
   EXPECT_EQ("test_double set to -inf\n",
             SetCommandLineOption("test_double", "-inf"));
-  EXPECT_PRED1(isinf, FLAGS_test_double);
+  EXPECT_INF(FLAGS_test_double);
   EXPECT_GT(0, FLAGS_test_double);
 
   EXPECT_EQ("test_double set to nan\n",
             SetCommandLineOption("test_double", "NaN"));
-  EXPECT_PRED1(isnan, FLAGS_test_double);
+  EXPECT_NAN(FLAGS_test_double);
 }
 
 // Tests that integer flags can be specified in many ways