added training of 3rd iteration kernel
added training of 3rd iteration kernel

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@2615 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: cc9a6c1aaf035aec05368d0f162ad1d9eac04e24
PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV