Revert "Contribs: don't allow pthread to use config.h"

It breaks the build of pthread.

This reverts commit f8db78d5.
Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr>

extras/contrib/src/Patches/pthread-config-h.patch

---- pthreads/pthread.h	2006-01-24 14:59:57.000000000 +0100
-+++ pthreads.old/pthread.h	2011-05-08 13:00:21.382759343 +0200
-@@ -210,10 +210,6 @@
-  * -----------------
-  */
- 
--#if HAVE_CONFIG_H
--#include "config.h"
--#endif /* HAVE_CONFIG_H */
--
- #ifndef NEED_FTIME
- #include <time.h>
- #else /* NEED_FTIME */

extras/contrib/src/contrib-src.mak

@@ -2297,7 +2297,6 @@ pthreads-w32-$(PTHREADS_VERSION)-release.tar.gz:
 pthreads: pthreads-w32-$(PTHREADS_VERSION)-release.tar.gz
 	$(EXTRACT_GZ)
 	(cd $@; patch -p0 < ../Patches/pthreads-detach.patch)
-	patch -p0 < Patches/pthread-config-h.patch
 	sed -i 's/^CROSS.*=/CROSS ?=/' $@/GNUmakefile
 ifdef HAVE_WIN64
 	(patch -p0 < Patches/pthreads-win64.patch)