2006-12-17  Matthias Clasen  <mclasen@redhat.com>

        Fix a few problems with nested menus in comboboxes
        (#386694, Yevgen Muntyan)

        * gtk/gtkcombobox.c (gtk_combo_box_menu_fill_level): Always
        connect the activate callback.
        (gtk_combo_box_menu_item_activate): Do nothing if called on
        an item with a submenu.
        (gtk_combo_box_menu_row_deleted): Remove a submenu when it
        is empty.