actor: fix translation-z setting
actor: fix translation-z setting

https://bugzilla.gnome.org/show_bug.cgi?id=695982

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