split out some ati stuff
7970 is locking up, but the 5870 is now loading correct FB w/out needing specification


git-svn-id: http://forge.voodooprojects.org/svn/chameleon@2174 b5af796a-00a8-11df-919b-ffff7a100b7d
warnings/errors from new llvm/clang (xcode 4.6)


git-svn-id: http://forge.voodooprojects.org/svn/chameleon@2175 b5af796a-00a8-11df-919b-ffff7a100b7d