test-picking: Don't manually paint the stage
test-picking: Don't manually paint the stage

Instead of using an idle handler that synchonously paints the stage
by manually calling clutter_actor_paint (stage) the test now uses an
idle handler that repeatedly queues a redraw on the stage.

do_events is now called from a "paint" signal handler for the stage, and
instead of manually determining the fps the test now uses
CLUTTER_SHOW_FPS=1 instead.

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