Use clutter-box2d-0.10.
Use clutter-box2d-0.10.

* clutter-box2d/clutter-box2dmm.pc.in:
* configure.in: Use clutter-box2d-0.10 rather than clutter-box2d-0.8.
* examples/bridge/main.cc:
* examples/chain/main.cc:
* examples/distance_joint/main.cc: Remove uses of CLUTTER_UNITS_FROM_FLOAT,
as in clutter-box2d itself.

GNOME/clutter-box2dmm,GNOME/clutter-box2dmm,GNOME/clutter-box2dmm