Fixed CompileSet so it returns true when there is nothing to compile at all.
Fixed CompileSet so it returns true when there is nothing to compile at all.


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