* clutter/clutter-actor.h:
* clutter/clutter-actor.c:
(clutter_actor_get_abs_opacity): Add function that does what
get_opacity() does now...
(clutter_actor_get_opacity): ... and make get_opacity() do what
it's supposed to be doing. The original get_opacity() returned
a composited value, and there's no way to actually extract the
real opacity value set with set_opacity().
* clutter/clutter-clone-texture.c:
* clutter/clutter-rectangle.c:
* clutter/clutter-texture.c: Update to use get_abs_opacity().
* clutter/clutter-entry.c:
* clutter/clutter-label.c: Ditto. Also, never change the stored
alpha value. (#804)
* tests/Makefile.am:
* tests/test-opacity.c: Test suite for the get_opacity() and
get_abs_opacity() API, and correct opacity handling.
* README: Add note about the change in get_opacity().
