Added stack connections
Added stack connections

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@7975 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 6dff97a435185af6bb8de00fafa378fc30e524de
dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV