new_contents: """dry"""
  
  import sys
  
  def dry(ctrl, message, func, *args, **kw):
      if ctrl.pargs.dry_run:
          print >> sys.stderr, "(DRY_RUN): " + message
          ctrl.app._output_data["stderr"].write("(DRY_RUN): " + message)
          return
      ctrl.log.info(message)
      return func(*args, **kw)
  
subject: Add dry module