* include/_mingw.h: Use only two underscores to uglify

__MINGW_ATTRIB_* macros.
	* include/stdlib.h: Adjust __MINGW_ATTRIB_* tokens.
	* includ/setjmp.h: Likewise.

	* include/sting.h: Add __MINGW_ATTRIB_PURE to locale-independent
	string functions.
	(_strdup, strdup): Add __MINGW_ATTRIB_MALLOC.

winsup/mingw/mingwex/stdio/vfscanf.c

@@ -34,7 +34,7 @@ int vfscanf(FILE * __restrict__ stream, const char * __restrict__ format, va_lis
     : "=a"(ret), "=c"(stream), "=d"(format)
     : "1"(stream), "2"(format), "S"(arg),
       "a"(&ret)
-    : "ebx");
+    : "ebx", "edi");
 
   return ret;
 }