RenderSystem: convert to range based for loops (#2528)
RenderSystem: convert to range based for loops (#2528)


OGRECave/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,paroj/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre