more bug fixes. alpha coefficient and alpha power are properly computed (I think)
more bug fixes. alpha coefficient and alpha power are properly computed (I think)

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@6972 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 8a470dfdd556c5d7bef66034366a60eadd3229d9
dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV