[xml] xmlversion.h.in.awn.threads.1.patch

["Andrew W. Nosenko" <andrew w nosenko gmail com>]

Attached patch removes extra checks for _REENTRANT, __MT__ and
_POSIX_C_SOURCE before defining LIBXML_THREAD_ENABLED macro.

Now, only one requirement for have LIBXML_THREAD_ENABLED macro defined,
is compiling the libxml2 library with multithread support enabled.

Rationale:
    1. 'gcc -pthread' doesn't define any _REENTRANT, __MT__ or
       _POSIX_C_SOURCE
    2. I may be wrong, but it seems to be dangerous to have library
       compiled with one library-wide set of defines (with
       LIBXML_THREAD_ENABLED in this case, because internal libxml2
       configure/Makefiles defines _REENTRANT macro) and
       application-user-of-library with another (without
       LIBXML_THREAD_ENABLED, because _REENTRANT macro is not defined by
       anyone).

-- 
Andrew W. Nosenko <andrew w nosenko gmail com>

2005-08-23  Andrew W. Nosenko  <andrew nosenko toatech com>

	* include/libxml/xmlversion.h.in: 
	(LIBXML_THREAD_ENABLED): Defined always if libxml2 library
	configured with multithread support enabled.

Index: include/libxml/xmlversion.h.in
===================================================================
RCS file: /cvs/gnome/libxml2/include/libxml/xmlversion.h.in,v
retrieving revision 1.57
diff -u -p -r1.57 xmlversion.h.in
--- include/libxml/xmlversion.h.in	22 Aug 2005 21:22:26 -0000	1.57
+++ include/libxml/xmlversion.h.in	23 Aug 2005 17:09:28 -0000
@@ -91,10 +91,8 @@ XMLPUBFUN void XMLCALL xmlCheckVersion(i
  * Whether the thread support is configured in
  */
 #if @WITH_THREADS@
-#if defined(_REENTRANT) || defined(__MT__) || (_POSIX_C_SOURCE - 0 >= 199506L)
 #define LIBXML_THREAD_ENABLED
 #endif
-#endif
 
 /**
  * LIBXML_TREE_ENABLED: