Added RenderStage::setClear*() methods from Camera::getClear*() sources
Added RenderStage::setClear*() methods from Camera::getClear*() sources


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