Add missing includes to fix build with newer GCC


(joerg)

@@ -1,5 +1,7 @@
-$NetBSD: distinfo,v 1.2 2005/02/23 23:11:54 agc Exp $
+$NetBSD: distinfo,v 1.3 2011/11/23 23:28:06 joerg Exp $
 
 SHA1 (anise-beta10-20040307-linux.tar.gz) = 3018edc28b8777a3e94343237557f0c74a135e0e
 RMD160 (anise-beta10-20040307-linux.tar.gz) = 3b711393ad72b4eb22343098d359424229f9097a
 Size (anise-beta10-20040307-linux.tar.gz) = 517545 bytes
+SHA1 (patch-file.cpp) = 603f88b56af6edfbc3dbf8bd81522ed28a74ecdb
+SHA1 (patch-option.cpp) = bb985b8c3d074e775a8b1020032403a82074ccb2

$NetBSD: patch-file.cpp,v 1.1 2011/11/23 23:28:06 joerg Exp $

--- file.cpp.orig	2011-11-23 16:45:41.000000000 +0000
+++ file.cpp
@@ -1,3 +1,4 @@
+#include <string.h>
 #include "file.h"
 
 File::File(Memory *memory, Option *option)

$NetBSD: patch-option.cpp,v 1.1 2011/11/23 23:28:06 joerg Exp $

--- option.cpp.orig	2011-11-23 16:46:06.000000000 +0000
+++ option.cpp
@@ -1,3 +1,4 @@
+#include <string.h>
 #include "option.h"
 
 Option::Option()