Version with ioappend flag for output connection files included.
Version with ioappend flag for output connection files included.

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@2014 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: b6f0f0af2f64fce6b5fe429e8914251785fc9fff
dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV