2002-12-16  Mark McLoughlin  <mark@skynet.ie>

        Make it possible to perform all relevant drops
        for a panel on the drawer button. Fixes #100965.

        * drawer.[ch]:
        (destroy_drawer): remove close timeout.
        (drag_data_received_cb),
        (drag_motion_cb), (close_drawer_in_idle),
        (queue_drawer_close_for_drag), (drag_leave_cb),
        (drag_drop_cb): impl.
        (create_drawer_applet): hook up dnd signals.

        * panel.[ch]:
        (panel_check_dnd_target_data),
        (panel_check_drop_forbidden),
        (panel_receive_dnd_data): split out parts of the
        panel dnd implementation so that the drawer can
        use it.
        (drag_data_recieved_cb), (drag_motion_cb),
        (drag_drop_cb): use it here also.