Fixed bug in Group::setChild relating to the accounting for OccluderNode.
Fixed bug in Group::setChild relating to the accounting for OccluderNode.


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