Added protection to the DatabasePager::requestNodeFile()'s call to startThread to ensure that only one startThread is every issued.
Added protection to the DatabasePager::requestNodeFile()'s call to startThread
to ensure that only one startThread is every issued.


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