[gdm] greeter: Start policykit agent in the fallback session

[Ray Strode <halfline src gnome org>]

commit aa1c5a5c36a326b144928b08730e84f81af8aacf
Author: Josselin Mouette <joss malsain org>
Date:   Mon Jun 25 12:21:38 2012 -0400

    greeter: Start policykit agent in the fallback session
    
    The shell session has a policykit agent since gnome-shell plays this
    role. This is not, however, the case of the fallback session which needs
    an agent of its own. Otherwise you canât shutdown a system if thereâs
    someone else logged on.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=678718

 data/gdm-fallback.session |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/gdm-fallback.session b/data/gdm-fallback.session
index 1f0da4d..137bd87 100644
--- a/data/gdm-fallback.session
+++ b/data/gdm-fallback.session
@@ -1,5 +1,5 @@
 [GNOME Session]
 Name=Display Manager
-RequiredComponents=gdm-simple-greeter;gnome-settings-daemon;
+RequiredComponents=gdm-simple-greeter;gnome-settings-daemon;polkit-gnome-authentication-agent-1
 RequiredProviders=windowmanager;
 DefaultProvider-windowmanager=metacity