2004-07-06  Mark McLoughlin  <mark@skynet.ie>

        Fixes "Invalid read of size 1" thrown up by valgrind.
        Report from Kjartan Maraas in bug #144460.

        * panel-profile.[ch]:
        (panel_profile_set_toplevel_id),
        (panel_profile_add_to_list),
        (panel_profile_load_toplevel),
        (panel_profile_load_and_show_toplevel),
        (panel_profile_load_object): make memory ownership easier
        to understand by making all these functions take a
        const string id.
        (panel_profile_create_toplevel),
        (panel_profile_load_added_ids),
        (panel_profile_delete_removed_ids),
        (panel_profile_load_list): free the ids in all the right
        places.

        * applet.[ch]: (panel_applet_queue_applet_to_load): similarily,
        make this take const sting ids and make a copy of them.

        * drawer.c, launcher.c, panel-action-button.c,
          panel-applet-frame.c, panel-compatibility.c, panel-menu-bar.c:
        free the ids in all the right places.