merge from gcc

libiberty/memset.c

@@ -13,17 +13,10 @@ Sets the first @var{count} bytes of @var{s} to the constant byte
 */
 
 #include <ansidecl.h>
-#ifdef ANSI_PROTOTYPES
 #include <stddef.h>
-#else
-#define size_t unsigned long
-#endif
 
 PTR
-memset (dest, val, len)
-     PTR dest;
-     register int val;
-     register size_t len;
+memset (PTR dest, register int val, register size_t len)
 {
   register unsigned char *ptr = (unsigned char*)dest;
   while (len-- > 0)