From Marco, fix to include/GL to clean up warnigns in Windows builds.
From Marco, fix to include/GL to clean up warnigns in Windows builds.


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