Patch by Xiang Zhang.

Patch by Xiang Zhang.

The fields ml_name and ml_doc are of type "const char *" rather of "char *".

The fields ml_name and ml_doc are of type "const char *" rather of "char *".

The fields ml_name and ml_doc are of type "const char *" rather of "char *".

rather of "char *".

Issue #28556: upstream improvements to docstrings and error messages by Ivan Levkivskyi (#331) (3.6->3.7)

Issue #28556: upstream improvements to docstrings and error messages by Ivan Levkivskyi (#331) (3.5->3.6)

It was deprecated in 3.4 and undocumented prior to that.

parameter now raises a DeprecationWarning.  It was deprecated in 3.4.
It was never documented prior to that.