Copied globalIndexFromLocal from conversions.h (adding _nompi to the name) so that test_kg could be used without MPI.  Added WARNING message about changes to globalIndexFromLocal being copied to test_kg.
Copied globalIndexFromLocal from conversions.h (adding _nompi to the name) so that test_kg could be used without MPI.  Added WARNING message about changes to globalIndexFromLocal being copied to test_kg.

git-svn-id: 602a26e73ae9f2a14e2bb95676f2e137fcc39919@3325 7c0444ca-5550-0410-9008-faecdbe78eb5

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