[gdm] configure: bump to 3.7.91

[Ray Strode <halfline src gnome org>]

commit ce1ff08f809b6650f9f8dc04771c05a4771a7913
Author: Ray Strode <rstrode redhat com>
Date:   Tue Mar 5 23:55:27 2013 -0500

    configure: bump to 3.7.91

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c2de8b3..14b6ff3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 
 AC_PREREQ([2.60])
 AC_INIT([gdm],
-        [3.7.90],
+        [3.7.91],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gdm])
 
 AC_CONFIG_SRCDIR([daemon/gdm-manager.c])