Message 264625 - Python tracker

For back compatibility reasons, I rejected a 'simple renaming', much as I would like to do it for reasons already given, and closed *this* issue in msg250451.  As I said then here and elsewhere, I instead propose to add new files with new names.  As I said above, I will propose a specific, revised plan in a new issue that I will open after some sleep. Please wait for that to discuss anything other than specific new names.