2007-08-13 Matthew Allum <mallum@openedhand.com>

* clutter/clutter-actor.c:
        * clutter/clutter-actor.h:
        * clutter/clutter-event.c:
        * clutter/clutter-event.h:
        * clutter/clutter-main.c:
        * clutter/clutter-main.h:
        * clutter/clutter-private.h:
        * clutter/clutter-stage.c:
        * clutter/clutter-stage.h:
        * clutter/clutter-types.h:
        Initial implementation of actors emmitting event signals (423);
        - Actors set_reactive() to receive mouse events.
          (call clutter_enable_motion_events() for per action motion events)
        - clutter_stage_set_key_focus () to direct key events.
        - Events bubble up to parents (ending at stage)
          (original source identified by clutter_event_get_source())
        TODO:
        - enter/leave notifys for actors.
        - stage specific events - fullscreen
        - grabs

        * tests/test-events.c:
        Extend a little to use new API

        * clutter/cogl/gl/cogl.c:
        * clutter/glx/clutter-backend-glx.c:
        Move get_proc_address into cogl and out of backend.
        (shaders will need it)

        * clutter/clutter-group.c: (clutter_group_real_lower):
        Fix a minor compile warning.

        * TODO:
        Sync up.

clutter/clutter-types.h

@@ -39,6 +39,9 @@ G_BEGIN_DECLS
 #define CLUTTER_TYPE_PADDING    (clutter_padding_get_type ())
 #define CLUTTER_TYPE_VERTEX     (clutter_vertex_get_type ())
 
+/* Forward delarations to avoid header catch 22's */
+typedef struct _ClutterActor         ClutterActor;
+
 /**
  * ClutterGravity:
  * @CLUTTER_GRAVITY_NONE: Do not apply any gravity