2003-02-24  Mark McLoughlin  <mark@skynet.ie>

        Take control of the panel's global keybindings. The
        screenshot utility is hooked up using a special case
        run_command and the menu and run dialog bindings are
        done using the _GNOME_PANEL_ACTION ClientMessage
        protocol.

        * src/display.[ch]: (meta_display_open): add some atoms.

        * src/keybindings.c:
        (handle_panel_keybinding): impl to handle a keybinding
        by sending an action message to the panel.

        * src/metacity.schemas.in: add schemas for the panel and
        screenshot keybindings and the screenshot commands.

        * src/prefs.[ch]: (update_command),
        (meta_prefs_get_gconf_key_for_command): impl special case
        handling for the screenshot commands. They are stored at
        the the end of the commands array but have named keys.