actor: Call unparent() in destroy
actor: Call unparent() in destroy

If the actor is an internal child of another actor then we should call
unparent() when destroying it, like clutter_actor_reparent() does;
otherwise we'll leak the actor, since the parent holds a reference to
it.

http://bugzilla.openedhand.com/show_bug.cgi?id=2009

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