binutils sprintf optimisation

Avoid the use of sprintf with a "%s" format string, replacing with
strcpy or stpcpy.  Use sprintf return value rather than a later
strlen.  Don't use strcat where we can keep track of the end of a
string output buffer.

	* dlltool.c (look_for_prog): memcpy prefix and strcpy prog_name.
	* dllwrap.c (look_for_prog): Likewise.
	* resrc.c (look_for_default): Likewise.  Add quotes with memmove
	rather than allocating another buffer.
	* size.c (size_number): Use sprintf return value.
	* stabs.c (parse_stab_argtypes): Likewise.
	* windmc.c (write_bin): Likewes, and use stpcpy.
	* wrstabs.c: Similarly throughout.

binutils/dllwrap.c

@@ -186,9 +186,9 @@ look_for_prog (const char *progname, const char *prefix, int end_prefix)
 		 + strlen (EXECUTABLE_SUFFIX)
 #endif
 		 + 10);
-  strcpy (cmd, prefix);
+  memcpy (cmd, prefix, end_prefix);
 
-  sprintf (cmd + end_prefix, "%s", progname);
+  strcpy (cmd + end_prefix, progname);
 
   if (strchr (cmd, '/') != NULL)
     {