Added setLayerLoc to initialize PVLayerLoc variable.  This now works with MPI.  Added explicit call to initFinal in run if it hasn't already been called.
Added setLayerLoc to initialize PVLayerLoc variable.  This now works with MPI.  Added explicit call to initFinal in run if it hasn't already been called.

git-svn-id: 602a26e73ae9f2a14e2bb95676f2e137fcc39919@2297 7c0444ca-5550-0410-9008-faecdbe78eb5

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