Changes for testing Image as a HyPerLayer.
Changes for testing Image as a HyPerLayer.

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@2555 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 47368f97aa9f15dd433a84969fec16da7d8ee701
dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV