[GL] Check RSC_AUTOMIP prior to glGenerateMipmapExt
[GL] Check RSC_AUTOMIP prior to glGenerateMipmapExt

--HG--
branch : v1-9

jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre