Started adding MPI to reading weights from file and integrating with Gar's reading PVP headers.
Started adding MPI to reading weights from file and integrating with Gar's reading PVP headers.

git-svn-id: 602a26e73ae9f2a14e2bb95676f2e137fcc39919@1962 7c0444ca-5550-0410-9008-faecdbe78eb5

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