osg::Geometry class, and removed the temporary IndexedGeometry. Port the rest
of the OSG across to account for the change in method calls -
osg::Geometry::addPrimitive(..) becomes osg::addPrimitiveSet(..)
encapsulates.
Added new osg::IndexGeometry implemention, *not* complete yet.
Changed the rest of the OSG to handle the renaming og Primitive to PrimitiveSet.
osg::PositionAttitudeTransform::AnimationPathCallback which us an app callback
which uses an AnimationPath to specify the new positions of the transform.
Added AnimationPath code to osglight to animate the positional light.
Added CullVisitor::setCullingMode() code into SceneView so that SceneView's
CullingMode is now properly passed onto CullVisitor. Note, this work
had been done before, but must has been lost in a merge. Umm...
