Added support for using multiple load threads as a thread pool used by the MasterOperation
Added support for using multiple load threads as a thread pool used by the MasterOperation


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