message: mark [Input]OutputArray as mutable
diff: @@ -581,9 +581,9 @@ class ArgInfo():
  if len(arg_tuple) > 2:
  self.defval = arg_tuple[2]
  self.out = ""
  - if len(arg_tuple) > 3 and "/O" in arg_tuple[3]:
  + if arg_tuple[0] in ("OutputArray", "OutputArrayOfArrays") or len(arg_tuple) > 3 and "/O" in arg_tuple[3]:
  self.out = "O"
  - if len(arg_tuple) > 3 and "/IO" in arg_tuple[3]:
  + if arg_tuple[0] in ("InputOutputArray", "InputOutputArrayOfArrays") or len(arg_tuple) > 3 and "/IO" in arg_tuple[3]:
  self.out = "IO"
  def rsname(self):
  