build: Depend on a stable version of Clutter
build: Depend on a stable version of Clutter

Let's depend on a stable version of Clutter, not a development one.

skinkie/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,skinkie/clutter-gst,ystreet/clutter-gst,lubosz/clutter-gst,lubosz/clutter-gst,skinkie/clutter-gst,GNOME/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst,GNOME/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst