[gdm] data: add disable-user-list key

[Ray Strode <halfline src gnome org>]

commit b6bc4e2416f60f9c38f8f54f11f0d1a5fc2d9024
Author: Ray Strode <rstrode redhat com>
Date:   Tue Oct 18 21:26:02 2011 -0400

    data: add disable-user-list key
    
    This commit adds a disable-user-list key that the greeter can read
    to know to disable the user list.
    
    Note, neither the shell greeter or the fallback greeter support
    reading the key. That will happen in follow up commits.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=660660

 data/org.gnome.login-screen.gschema.xml.in |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/data/org.gnome.login-screen.gschema.xml.in b/data/org.gnome.login-screen.gschema.xml.in
index f974d6f..f0c9dfe 100644
--- a/data/org.gnome.login-screen.gschema.xml.in
+++ b/data/org.gnome.login-screen.gschema.xml.in
@@ -31,5 +31,15 @@
         provide branding.
       </_description>
     </key>
+    <key name="disable-user-list" type="b">
+      <default>false</default>
+      <_summary>
+        Avoid showing user list
+      </_summary>
+      <_description>
+        The login screen normally shows a list of available users to log in
+        as. This setting can be toggled to disable showing the user list.
+      </_description>
+    </key>
   </schema>
 </schemalist>