From Fabien Lavignotte,"Some other litte changes just to clean up the API.

TimeLine : remove virtual inheritance that is not needed
RigGeometry : put some methods/members in private section (everything was public), use META_Object macro
osganimationskinning.cpp : remove two lines that are not needed"

Merged from svn/trunk:

svn merge -r 9736:9737 http://www.openscenegraph.org/svn/osg/OpenSceneGraph/trunk

examples/osganimationskinning/osganimationskinning.cpp

@@ -252,9 +252,6 @@ int main (int argc, char* argv[])
 
     initVertexMap(root.get(), right0.get(), right1.get(), geom, src.get());
 
-    geom->buildVertexSet();
-    geom->buildTransformer(skelroot.get());
-
     // let's run !
     viewer.setSceneData( scene );
     viewer.realize();