remove GNU_SOURCE from c files, push from build system instead

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8558 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/xmlrpc-c/lib/libutil/asprintf.c

-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>

libs/xmlrpc-c/lib/libutil/make_printable.c

-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 
 #include <stdarg.h>
 #include <string.h>

libs/xmlrpc-c/lib/util/casprintf.c

-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>

libs/xmlrpc-c/lib/util/stripcaseeq.c

-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 #include <ctype.h>
 
 #include "bool.h"

libs/xmlrpc-c/tools/lib/dumpvalue.c

@@ -5,7 +5,7 @@
    used for debugging purposes in other places.
 */
 
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 
 #include <stdlib.h>
 #include <stdio.h>

libs/xmlrpc-c/tools/xmlrpc/xmlrpc.c

@@ -35,7 +35,7 @@
 
 */
 
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 
 #include <stdlib.h>
 #include <stdio.h>