added ability to write multiple lists of training/testing files with different inital randome states.  random state use for each list is saved as well
added ability to write multiple lists of training/testing files with different inital randome states.  random state use for each list is saved as well

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@4021 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 5804e1d04688ba678144b15cc268fe2231708d5c
dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV