script: Do not use clutter_stage_get_default()
script: Do not use clutter_stage_get_default()

It's about to go away, so we should use the StageManager API instead.

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