- (djm) [configure.ac regress/agent-getpeereid.sh regress/multiplex.sh]
   [regress/sftp-glob.sh regress/test-exec.sh] Rework how feature tests are
   disabled on platforms that do not support them; add a "config_defined()"
   shell function that greps for defines in config.h and use them to decide
   on feature tests.
   Convert a couple of existing grep's over config.h to use the new function
   Add a define "FILESYSTEM_NO_BACKSLASH" for filesystem that can't represent
   backslash characters in filenames, enable it for Cygwin and use it to turn
   of tests for quotes backslashes in sftp-glob.sh.
   based on discussion with vinschen AT redhat.com and dtucker@; ok dtucker@
diff --git a/configure.ac b/configure.ac
index 1817dd9..02e8423 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-# $Id: configure.ac,v 1.465 2011/01/16 07:28:12 dtucker Exp $
+# $Id: configure.ac,v 1.466 2011/01/17 05:17:09 djm Exp $
 #
 # Copyright (c) 1999-2004 Damien Miller
 #
@@ -15,7 +15,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_INIT(OpenSSH, Portable, openssh-unix-dev@mindrot.org)
-AC_REVISION($Revision: 1.465 $)
+AC_REVISION($Revision: 1.466 $)
 AC_CONFIG_SRCDIR([ssh.c])
 
 # local macros
@@ -483,6 +483,7 @@
 		[Define if your platform needs to skip post auth
 		file descriptor passing])
 	AC_DEFINE(SSH_IOBUFSZ, 65535, [Windows is sensitive to read buffer size])
+	AC_DEFINE(FILESYSTEM_NO_BACKSLASH, 1, [File names may not contain backslash characters]) 
 	;;
 *-*-dgux*)
 	AC_DEFINE(IP_TOS_IS_BROKEN, 1,