Made the inner helper classes friend to try and get round VS6.0 problems
Made the inner helper classes friend to try and get round VS6.0 problems


marchelbling/osg,openscenegraph/osg,artoolkit/osg,jtorresfabra/osg,marchelbling/osg,jtorresfabra/osg,jtorresfabra/osg,scrawl/osg,tomasthoresen/osg,scrawl/osg,openscenegraph/osg,tomasthoresen/osg,marchelbling/osg,scrawl/osg,openscenegraph/osg,tomasthoresen/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,artoolkit/osg,tomasthoresen/osg,artoolkit/osg,artoolkit/osg