[gnome-settings-daemon] Restrict GTK to use the X11 backend

[Rui Matos <rtcm src gnome org>]

commit 44950095ff94ea570323473c28d713022ae2345c
Author: Giovanni Campagna <gcampagn redhat com>
Date:   Tue Aug 20 18:25:25 2013 +0200

    Restrict GTK to use the X11 backend
    
    We're working actively to reduce the dependency on x11, but for
    now this is a hard requirement.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=706419

 gnome-settings-daemon/main.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gnome-settings-daemon/main.c b/gnome-settings-daemon/main.c
index 0037a3f..746c870 100644
--- a/gnome-settings-daemon/main.c
+++ b/gnome-settings-daemon/main.c
@@ -449,6 +449,8 @@ main (int argc, char *argv[])
 
         parse_args (&argc, &argv);
 
+        gdk_set_allowed_backends ("x11");
+
         gnome_settings_profile_start ("opening gtk display");
         if (! gtk_init_check (NULL, NULL)) {
                 g_warning ("Unable to initialize GTK+");