From Sean, fix for Sun windows extension checking.
From Sean, fix for Sun windows extension checking.


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