Spring cleanup ...: - configure.in Makefile.am config.h.in

Spring cleanup ...:
- configure.in Makefile.am config.h.in xmlversion.h.in: detect if
  we need string functions
- trio.[ch] strio.[ch]: embedded the Trio-0.23 string functions
  to be able to use them where needed. Applied some changes
  to reduce name linking pollution and compile in only what's
  needed.
- HTMLtree.c debugXML.c entities.c error.c nanoftp.c valid.c
  xlink.c xmlversion.h.in xpath.c: got rid of the #ifdef
  for the string manipulation functions
- xmlmemory.[ch]: removed DEBUG_MEMORY_FREED and added it automatically
  to the free() function of xmlmemory.c
- entities.c HTMLtree.c parserInternals.c tree.c uri.c valid.c
  xinclude.c xmlIO.c xpath.c xpointer.c: removed the MEM_CLEANUP
  usage.
Daniel
diff --git a/Makefile.am b/Makefile.am
index fb9efd5..fae499b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -15,29 +15,11 @@
 
 libxml2_la_LDFLAGS = -version-info @LIBXML_VERSION_INFO@
 
-libxml2_la_SOURCES = \
-		SAX.c \
-		entities.c \
-		encoding.c \
-		error.c \
-		parserInternals.c \
-		parser.c \
-		tree.c \
-		hash.c \
-		list.c \
-		xmlIO.c \
-		xmlmemory.c \
-		uri.c \
-		valid.c \
-		xlink.c \
-		HTMLparser.c \
-		HTMLtree.c \
-		debugXML.c \
-		xpath.c \
-		xpointer.c \
-		xinclude.c \
-		nanohttp.c \
-		nanoftp.c
+libxml2_la_SOURCES = SAX.c entities.c encoding.c error.c parserInternals.c  \
+		parser.c tree.c hash.c list.c xmlIO.c xmlmemory.c uri.c  \
+		valid.c xlink.c HTMLparser.c HTMLtree.c debugXML.c xpath.c  \
+		xpointer.c xinclude.c nanohttp.c nanoftp.c  \
+		trio.c strio.c
 
 DEPS = $(top_builddir)/libxml2.la
 LDADDS = $(top_builddir)/libxml2.la @Z_LIBS@ -lm
@@ -428,7 +410,8 @@
 	     $(man_MANS) libxml-2.0.pc.in xmlversion.h.in \
 	     win32/README.MSDev win32/Makefile.mingw \
 	     win32/libxml2/libxml2.dsp win32/libxml2/libxml2_so.dsp \
-	     win32/libxml2/libxml2_a.dsp vms/build_libxml.com vms/config.vms
+	     win32/libxml2/libxml2_a.dsp vms/build_libxml.com vms/config.vms \
+             trio.h strio.h
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libxml-2.0.pc