2002-12-20  Mark McLoughlin  <mark@skynet.ie>

        /me shovels more crap onto the dung heap that is the panel.

        More precisely, fix #93177 by loading the default panel
        configuration on all screens, instead of just loading
        a foobar on the non-default screens.

        * applet.h: kill APPLET_EMPTY and all the string
        ids which haven't been used since 1.4.

        * applet.c:
        (panel_applet_get_full_gconf_key): kill. dead. good bye.
        (panel_applet_load_from_unique_id),
        (panel_applet_load_list): use PanelGConfKeyType to
        distinguish between "applets" and "objects" instead of
        using the APPLET_EMPTY hack.
        (panel_applet_load_default_applet_for_screen),
        (panel_applet_load_defaults_for_screen): impl loading the
        configuration for the default set of applets onto a
        particular screen.
        (panel_applet_save_position), (panel_applet_save_to_gconf):
        use panel_gconf_full_key instead of panel_applet_get_full_gconf_key;

        * panel-gconf.[ch]:
        (panel_gconf_load_default_config_for_screen): impl method
        for applying the schemas for a default panel or applet
        to a new panel or applet on a given screen.

        * panel.c:
        (panel_load_fallback_default_panel): the worst case scenario.
        Just load a foobar.
        (panel_load_default_panel_for_screen),
        (panel_load_default_panels_for_screen): impl loading the
        configuration for the default set of panels onto a
        particular screen.
        (panel_ensure_panel_per_screen): load the default panels
        if no other panels are on that screen.
        (panel_load_panels_from_gconf): upd.