add patch from upstream to fix a sign extension problem which

breaks blowfish password hashes for non-ASCII characters
bump PKGREV

security/john/Makefile

@@ -1,7 +1,8 @@
-# $NetBSD: Makefile,v 1.19 2010/12/13 10:33:24 wiz Exp $
+# $NetBSD: Makefile,v 1.20 2011/06/20 09:17:50 drochner Exp $
 #
 
 DISTNAME=	john-1.7.6
+PKGREVISION=	1
 CATEGORIES=	security textproc
 MASTER_SITES=	http://www.openwall.com/john/g/
 

security/john/distinfo

@@ -1,7 +1,8 @@
-$NetBSD: distinfo,v 1.12 2010/12/13 10:32:35 wiz Exp $
+$NetBSD: distinfo,v 1.13 2011/06/20 09:17:50 drochner Exp $
 
 SHA1 (john-1.7.6.tar.gz) = da0b6298e6e045606d48880df045096e8bc87fcb
 RMD160 (john-1.7.6.tar.gz) = 294fa9a381b45df6fda6e537bc920e74c1d966b0
 Size (john-1.7.6.tar.gz) = 832790 bytes
 SHA1 (patch-aa) = c7f027cec0ee565312fd4417ded8fe43005b01d1
 SHA1 (patch-ab) = 4f8c9e1bba14f64b651c6d08337f004a3e278e44
+SHA1 (patch-ac) = 8c123939d2b4939e172ae32cd90ba2950d907dd8

security/john/patches/patch-ac

@@ -0,0 +1,15 @@
+$NetBSD: patch-ac,v 1.1 2011/06/20 09:17:50 drochner Exp $
+
+http://www.openwall.com/lists/john-dev/2011/06/19/3
+
+--- src/BF_std.c.orig	2010-05-25 06:30:33.000000000 +0000
++++ src/BF_std.c
+@@ -587,7 +587,7 @@ void BF_std_set_key(char *key, int index
+ 		tmp = 0;
+ 		for (j = 0; j < 4; j++) {
+ 			tmp <<= 8;
+-			tmp |= *ptr;
++			tmp |= (unsigned char)*ptr;
+ 
+ 			if (!*ptr) ptr = key; else ptr++;
+ 		}