pull string.h for needed prototypes

benchmarks/bytebench/patches/patch-src_dhry_1_c

@@ -1,7 +1,15 @@
-$OpenBSD: patch-src_dhry_1_c,v 1.1 2002/07/17 21:57:21 lebel Exp $
---- src/dhry_1.c.orig	Wed Feb  5 05:08:47 1992
-+++ src/dhry_1.c	Wed Jul 17 17:36:08 2002
-@@ -78,7 +78,7 @@ extern  int     times ();
+$OpenBSD: patch-src_dhry_1_c,v 1.2 2003/01/15 00:14:59 pvalchev Exp $
+--- src/dhry_1.c.orig	Wed Feb  5 03:08:47 1992
++++ src/dhry_1.c	Tue Jan 14 16:56:12 2003
+@@ -33,6 +33,7 @@
+ char SCCSid[] = "@(#) @(#)dhry_1.c:3.4 -- 5/15/91 19:30:21";
+ 
+ #include <stdio.h>
++#include <string.h>
+ #include "dhry.h"
+ #include "timeit.c"
+ 
+@@ -78,7 +79,7 @@ extern  int     times ();
                  /* Measurements should last at least about 2 seconds */
  #endif
  #ifdef TIME