* clutter/clutter-behaviour-depth.h:
	* clutter/clutter-behaviour-depth.c:
	(clutter_behaviour_depth_set_bounds),
	(clutter_behaviour_depth_get_bounds): Add the depth-start and
	depth-end accessors.

	* tests/test-depth.c (timeline_completed): Use set_bounds()
	instead of g_object_set().

	* clutter.symbols: Add clutter_behaviour_depth_set_bounds()
	and clutter_behaviour_opacity_get_bounds() to the list of
	public symbols.