* Refactore of RigGeometry to support hardware skinning
* Refactore of Timeline to split Action in differents files
* Add example how to use hardware skinning
osgAnimation.
- Animation : removed the _name attribute that is never used.
- BasicAnimationManager : fix a crash on Windows with the example
osganimationviewer. The _lastUpdate attribute was not initialized when
using copy constructor.
- CMakeLists.txt : add RigGeometry to the headers list"