anchor.diff:  
       unpack_payload
   
  -    if [[ -n $UNPACK_ONLY ]] ; then
  +    if [ "$UNPACK_ONLY" == "1" ] ; then
           echo "Unpacking complete, not moving symlinks or restarting because unpack only was specified."
       else
           create_symlinks
  
positive.code:                 export VERBOSE=1
                  shift;;
              -u)
                  UNPACK_ONLY=true
                  shift;;
              -f)
                  FORCE=true
                  shift;;
              -y)
                  CONFIRM="y"
  
negative.code:     if [ -r $AFTER_INSTALL ] ; then
          chmod +x $AFTER_INSTALL
          log "Running post install script"
          log $($AFTER_INSTALL)
          return $?
      fi
      return 0
  