[gdm] configure: bump to 3.15.3.1

[Ray Strode <halfline src gnome org>]

commit a1a66ad688dfef9f0a8149b66a62006d59326090
Author: Ray Strode <rstrode redhat com>
Date:   Fri Dec 19 09:08:52 2014 -0500

    configure: bump to 3.15.3.1

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 236bfa3..c6490ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 
 AC_PREREQ([2.60])
 AC_INIT([gdm],
-        [3.15.3],
+        [3.15.3.1],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gdm])
 
 AC_CONFIG_SRCDIR([daemon/gdm-manager.c])