Use a Tweener "Frame Ticker" with a ClutterTimeline backend

Use a Tweener "Frame Ticker" with a ClutterTimeline backend

Call Tweener.setFrameTicker() with a custom object that bridges to
ClutterTimeline to get new frame notifications. Combined with a
hack to dynamically adjust the frame ticker's frame rate when
Clutter drops frames, this means that our animations play in the
intended time even if rendering is too slow to maintain a full
60HZ frame rate.

http://bugzilla.gnome.org/show_bug.cgi?id=561745

svn path=/trunk/; revision=79