Fix to osgDB::getStrippedName(..) so that handles the case of file without an extension.
Fix to osgDB::getStrippedName(..) so that handles the case of file without
an extension.


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