Added the fallback of intersecting with the a drawables bounding box, if the drawable isn't a GeoSet and hence supported by the IntersectVisitor's GeoSet primitive intersections code.
Added the fallback of intersecting with the a drawables bounding box, if the drawable
isn't a GeoSet and hence supported by the IntersectVisitor's GeoSet primitive
intersections code.


XiaoCC/osg,XiaoCC/osg,ntoand/osg,ntoand/osg,koshman86/osg,stmh/osg,ntoand/osg,XiaoCC/osg,omega-hub/osg,omega-hub/osg,koshman86/osg,omega-hub/osg,artoolkit/osg,artoolkit/osg,XiaoCC/osg,ghub/osg,ghub/osg,koshman86/osg,artoolkit/osg,stmh/osg,stmh/osg,XiaoCC/osg,ghub/osg,ghub/osg,stmh/osg,ntoand/osg,artoolkit/osg,omega-hub/osg,stmh/osg,koshman86/osg