and have updated GeoSet to use mutable values for the _numverts etc, allowing osg::GeoSet::computeNumVerts() to be a const operation. osg::GeoSet::getNumVerts is now a const once more, so avoiding compilation problems. Also chaned the new osgconv orientation code to use a Drawable::AttributeFunctor so it can work on other Drawables other than just GeoSets.