bug fixes in SiblingConn related to shmget
bug fixes in SiblingConn related to shmget

git-svn-id: http://svn.code.sf.net/p/petavision/code/sandbox@6571 7c0444ca-5550-0410-9008-faecdbe78eb5

Former-commit-id: 6663d6fb5e1e90a0b39477cf82fbf304c90d1303
dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,PetaVision/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV,dpaiton/OpenPV