merge from gcc

libiberty/rindex.c

@@ -1,5 +1,17 @@
 /* Stub implementation of (obsolete) rindex(). */
 
+/*
+
+@deftypefn Supplemental char* rindex (const char *@var{s}, int @var{c})
+
+Returns a pointer to the last occurance of the character @var{c} in
+the string @var{s}, or NULL if not found.  The use of @code{rindex} is
+deprecated in new programs in favor of @code{strrchr}.
+
+@end deftypefn
+
+*/
+
 extern char *strrchr ();
 
 char *