GLES2: When running on Linux, use FBO's for RTT's by default.
GLES2: When running on Linux, use FBO's for RTT's by default.

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