set up for GPU use
set up for GPU use

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@9011 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: ab7d7fbf5b3fb0bf9dc36d01c0b8a5b9057472da
dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV