[gnome-session] configure: bump to 3.15.4

[Ray Strode <halfline src gnome org>]

commit 04ca9240ecfe8bb215cd34b7253de110d2269973
Author: Ray Strode <rstrode redhat com>
Date:   Thu Jan 29 10:53:20 2015 -0500

    configure: bump to 3.15.4

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index da2bf2a..73a1075 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT([gnome-session],
-        [3.15.3],
+        [3.15.4],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gnome-session])
 
 AC_CONFIG_SRCDIR([gnome-session])