added file for global variables
added file for global variables

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@6465 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 5ad3749c081ee4b8f5e5085d98ac68b1aa74baa0
dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV