[gnome-settings-daemon] media-keys: Update gvc submodule to git master

[Bastien Nocera <hadess src gnome org>]

commit f3eb08cc78bfb15ea62c0c620f3a9e9626914632
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Fri Jan 11 16:24:24 2013 -0500

    media-keys: Update gvc submodule to git master
    
    https://bugzilla.gnome.org/show_bug.cgi?id=675901

 plugins/media-keys/gvc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/media-keys/gvc b/plugins/media-keys/gvc
index f3df56c..03894ef 160000
--- a/plugins/media-keys/gvc
+++ b/plugins/media-keys/gvc
@@ -1 +1 @@
-Subproject commit f3df56c399279f52b141b4a2fa3df0b08bdcec55
+Subproject commit 03894efbcd010faf53bbc6e27256d27485f721b8