Changed the strength from negative to positive for the RetinaOff to L1 connection.
Changed the strength from negative to positive for the RetinaOff to L1 connection.

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@2569 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 868312af6b6dcb8fd21f01d9d833d79afd23db28
PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV