[gdm] Add back label-for and labelled-by a11y relations

[Ray Strode <halfline src gnome org>]

commit 13eb67bf94402666c2d742557bcb3dd4417117d0
Author: Ray Strode <rstrode redhat com>
Date:   Mon Apr 26 13:16:40 2010 -0400

    Add back label-for and labelled-by a11y relations
    
    They were dropped when going to GtkBuilder.
    
    http://bugzilla.gnome.org/613434

 gui/simple-greeter/gdm-greeter-login-window.ui |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/gui/simple-greeter/gdm-greeter-login-window.ui b/gui/simple-greeter/gdm-greeter-login-window.ui
index 48c6762..0bf02a9 100644
--- a/gui/simple-greeter/gdm-greeter-login-window.ui
+++ b/gui/simple-greeter/gdm-greeter-login-window.ui
@@ -169,6 +169,10 @@
                             <child>
                               <object class="GtkLabel" id="auth-prompt-label">
                                 <property name="visible">True</property>
+
+                                <accessibility>
+                                  <relation type="label-for" target="auth-prompt-entry"/>
+                                </accessibility>
                               </object>
                               <packing>
                                 <property name="expand">False</property>
@@ -182,6 +186,9 @@
                                 <property name="can_focus">True</property>
                                 <property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
                                 <property name="activates_default">True</property>
+                                <accessibility>
+                                  <relation type="labelled-by" target="auth-prompt-label"/>
+                                </accessibility>
                               </object>
                               <packing>
                                 <property name="position">1</property>