Message 145871 - Python tracker

Thanks to #12281, it is now trivial to implement any Windows code page in Python. I don't know if existing code pages (e.g. cp932) should use codecs.code_page_encode/.code_page_decode on Windows, or continue to use the (portable) Python code.

Users want the code page 65001, even if I consider that it is useless to set the ANSI code page to 65001 in a console (see issue #1602), but that's a different story. Attached patch implements this code page.