meta_display_list_windows: Exclude override-redirect

Don't include override-redirect windows in the list return by
meta_display_list_windows(), since we almost never want to handle
them when considering "all window" for the display. Add a separate
meta_display_list_all_windows() that includes override-redirect
windows.

http://bugzilla.gnome.org/show_bug.cgi?id=582639

src/core/keybindings.c

@@ -460,7 +460,7 @@ regrab_key_bindings (MetaDisplay *display)
       tmp = tmp->next;
     }
 
-  windows = meta_display_list_windows (display);
+  windows = meta_display_list_windows (display, META_LIST_DEFAULT);
   tmp = windows;
   while (tmp != NULL)
     {