* include/stdarg.h (va_list): Typedef as __builtin_va_list if

__GNUC__ >= 3.
	* include/varargs.h (va_list): Ditto.
	* include/stdio.h (va_list): Ditto.

winsup/mingw/include/stdarg.h

@@ -52,9 +52,12 @@
 
 #ifndef	_VA_LIST
 #define _VA_LIST
+#if defined __GNUC__ && __GNUC__ >= 3
+typedef __builtin_va_list va_list;
+#else
 typedef char* va_list;
 #endif
-
+#endif
 
 /*
  * Amount of space required in an argument list (ie. the stack) for an