Add a patch to handle an ABI change relative to libgcrypt 1.5

Confirmed upstream:
http://lists.gnupg.org/pipermail/gnupg-users/2011-July/042333.html

PR:		ports/158674
Submitted by:	Mark Atkinson <atkin901@gmail.com>
Approved by:	early maintainer timeout/portmgr (pav)

security/gnupg/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	gnupg
 PORTVERSION=	2.0.17
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	security
 MASTER_SITES=	${MASTER_SITE_GNUPG}
 MASTER_SITE_SUBDIR=	gnupg

security/gnupg/files/patch-g10__pkglue.c

@@ -0,0 +1,24 @@
+--- g10/pkglue.c.orig	2011-01-09 14:06:16.000000000 -0800
++++ g10/pkglue.c	2011-07-12 21:32:41.000000000 -0700
+@@ -34,10 +34,10 @@
+ {
+   gcry_sexp_t list;
+   gcry_mpi_t data;
+-  
++
+   list = gcry_sexp_find_token (sexp, item, 0);
+   assert (list);
+-  data = gcry_sexp_nth_mpi (list, 1, 0);
++  data = gcry_sexp_nth_mpi (list, 1, GCRYMPI_FMT_USG);
+   assert (data);
+   gcry_sexp_release (list);
+   return data;
+@@ -293,7 +293,7 @@
+   if (rc)
+     return rc;
+ 
+-  *result = gcry_sexp_nth_mpi (s_plain, 0, 0);
++  *result = gcry_sexp_nth_mpi (s_plain, 0, GCRYMPI_FMT_USG);
+   gcry_sexp_release (s_plain);
+   if (!*result)
+     return -1;			/* oops */