[gnome-desktop] Update libgsystem

[Colin Walters <walters src gnome org>]

commit efd4f72c081c0aed58602ad06923063f7ad3c646
Author: Colin Walters <walters verbum org>
Date:   Mon Aug 27 17:30:56 2012 -0400

    Update libgsystem

 libgnome-desktop/libgsystem |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgnome-desktop/libgsystem b/libgnome-desktop/libgsystem
index c4068ea..5ed135b 160000
--- a/libgnome-desktop/libgsystem
+++ b/libgnome-desktop/libgsystem
@@ -1 +1 @@
-Subproject commit c4068eaa793212eb7caad6e0ff2fb35e4aab184a
+Subproject commit 5ed135b8f56a4a7d085a7fa144fdc59131ba8d51