* Removed our stddef.h. We don't need it, since gcc comes with one that

under Haiku overrides ours anyway.
* Adjusted size_t.h, wchar_t.h, wchar.h accordingly. This should fix the
  annoying "ssize_t redefined" warnings when compiling under Haiku.
* When building Haiku the gcc headers come first in the include
  search path now, as it should be. The respective TODO suggested that
  this might break the build depending on compiler version and host
  platform. I've tested with Linux gcc 2 and gcc 4, which work fine.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24406 a95241bf-73f2-0310-859d-f6bbb57e9c96

build/jam/HeadersRules

@@ -365,8 +365,11 @@ rule FStandardHeaders
 					   kernel media mail midi midi2 net opengl storage support
 					   translation ;
 
+	# GCC headers
+	local headers = $(HAIKU_GCC_HEADERS_DIR) ;
+
 	# Use headers directory, to allow to do things like include <posix/string.h>
-	local headers = [ FDirName $(HAIKU_TOP) headers ] ;
+	headers += [ FDirName $(HAIKU_TOP) headers ] ;
 
 	# Use posix headers directory
 	headers += [ FDirName $(HAIKU_TOP) headers posix ] ;
@@ -392,15 +395,6 @@ rule FStandardHeaders
 		headers += [ FDirName $(HAIKU_TOP) headers cpp ] ;
 	}
 
-	# The compiler dependent headers.
-	# TODO: Actually these directory should be listed before the posix and cpp
-	# directories, since the headers found here are supposed to override some of
-	# the headers in the latter directories. Unfortunately some of our headers
-	# are a bit messy (e.g. stddef.h) and using the compiler headers causes
-	# trouble when using different compilers (gcc 2 vs. gcc 4) and different
-	# host platforms (BeOS vs. Linux).
-	headers += $(HAIKU_GCC_HEADERS_DIR) ;
-
 	return $(headers) ;
 }