group: Gut the implementation
group: Gut the implementation

A Group is a just a ClutterActor with the layout-manager property set at
instance initialization time. It doesn't need anything else from
ClutterActor's vtable, except the slightly custom show_all/hide_all
implementation, and a simplified get_paint_volume.

collects/clutter,jigpu/clutter,Distrotech/clutter,jigpu/clutter,kerrickstaley/clutter-vala,Distrotech/clutter,collects/clutter,Distrotech/clutter,djdeath/clutter,jigpu/clutter,GNOME/clutter,ebassi/clutter,Distrotech/clutter,djdeath/clutter,djdeath/clutter-android,heysion/clutter-clone,djdeath/clutter-android,GNOME/clutter,jigpu/clutter,kerrickstaley/clutter-vala,djdeath/clutter-multithreaded,djdeath/clutter,heysion/clutter-clone,jigpu/clutter,collects/clutter,GNOME/clutter,collects/clutter,kerrickstaley/clutter-vala,djdeath/clutter-android,GNOME/clutter,ebassi/clutter,ebassi/clutter,heysion/clutter-clone,GNOME/clutter,collects/clutter,djdeath/clutter,heysion/clutter-clone,djdeath/clutter-multithreaded,jigpu/clutter,Distrotech/clutter,Distrotech/clutter,djdeath/clutter-multithreaded,djdeath/clutter-android,djdeath/clutter-multithreaded,djdeath/clutter,heysion/clutter-clone,kerrickstaley/clutter-vala,djdeath/clutter-android,djdeath/clutter,ebassi/clutter,ebassi/clutter