Remove nested parenthesis, not supported on CMake 2.6 (only 2.8)
Remove nested parenthesis, not supported on CMake 2.6 (only 2.8)

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