Changed the debugging info to output to osg::notify() rather than cout.
Changed the debugging info to output to osg::notify() rather than cout.

Add a clear of all the internal EdgeCollapse structures to avoid memory
leaks


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