ClutterShaderEffect: Don't throw away the program for a new actor
ClutterShaderEffect: Don't throw away the program for a new actor

Previously when the shader effect is used with a new actor it would
end up throwing away the old program. I don't think this is neccessary
and it means if you use an effect to temporarily bind to an actor then
it will recompile the shader whenever it is applied.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2454

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