[seahorse] Force-enable PGP during distcheck

[David King <davidk src gnome org>]

commit 195bdf93d47cb11b37156763478d3a5cdbd45dce
Author: David King <amigadave amigadave com>
Date:   Mon Mar 17 11:55:41 2014 +0000

    Force-enable PGP during distcheck
    
    Unless --enable-pgp is passed to configure during distcheck, PGP support
    can be disabled, causing PGP-related files not to be distributed,
    leading to a build failure.

 Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 1616867..87ee271 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -37,7 +37,8 @@ DISTCHECK_CONFIGURE_FLAGS = \
     --disable-update-mime-database \
     --disable-debug \
     --disable-strict \
-    --disable-valac
+    --disable-valac \
+    --enable-pgp
 
 CHANGELOG_START = \
        d2f8367dc600080b6cf3edbe4e2fc204f929471e