Fixed bug in writing (binning of) patches that led to zero weights being written.  This clearly showed up in histograms where there were excess zero weights at borders.
Fixed bug in writing (binning of) patches that led to zero weights being written.  This clearly showed up in histograms where there were excess zero weights at borders.

git-svn-id: 602a26e73ae9f2a14e2bb95676f2e137fcc39919@2329 7c0444ca-5550-0410-9008-faecdbe78eb5

dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV