animation: Keep a weak reference on actors
animation: Keep a weak reference on actors

Actors, unlike objects, can effectively go away whilst being
animated - usually because of an explicit destoy().

The Animation created by clutter_actor_animate() and friends
should keep a weak reference on the actor and eventually
get rid of the animation itself in case the actor goes away
whilst being animated.

GNOME/clutter,nobled/clutter,rkudiyarov/clutter_osx,collects/clutter,dlespiau/clutter,rkudiyarov/clutter_osx,jigpu/clutter,ebassi/clutter,heysion/clutter-clone,djdeath/clutter-multithreaded,spatulasnout/clutter,nobled/clutter,GNOME/clutter,ebassi/clutter,kerrickstaley/clutter-vala,spatulasnout/clutter,jigpu/clutter,djdeath/clutter,djdeath/clutter,jigpu/clutter,jigpu/clutter,spatulasnout/clutter,jigpu/clutter,djdeath/clutter-multithreaded,heysion/clutter-clone,ebassi/clutter,djdeath/clutter-android,kerrickstaley/clutter-vala,Distrotech/clutter,heysion/clutter-clone,jigpu/clutter,djdeath/clutter-multithreaded,GNOME/clutter,Distrotech/clutter,collects/clutter,Distrotech/clutter,collects/clutter,Distrotech/clutter,spatulasnout/clutter,djdeath/clutter,heysion/clutter-clone,nobled/clutter,kerrickstaley/clutter-vala,djdeath/clutter,djdeath/clutter-android,Distrotech/clutter,djdeath/clutter-android,djdeath/clutter-android,GNOME/clutter,ebassi/clutter,heysion/clutter-clone,spatulasnout/clutter,rkudiyarov/clutter_osx,Distrotech/clutter,dlespiau/clutter,djdeath/clutter-multithreaded,collects/clutter,kerrickstaley/clutter-vala,ebassi/clutter,djdeath/clutter-android,rkudiyarov/clutter_osx,GNOME/clutter,djdeath/clutter,dlespiau/clutter,djdeath/clutter,collects/clutter