Added haveAppliedAttribute to allow draw callbacks to get access to the current active lights.
Added haveAppliedAttribute to allow draw callbacks to get access to the
current active lights.


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