Message 285278 - Python tracker

I only tested the the PEP 540 implementation on Linux.

The PEP and its implementation should adjusted for Windows, especially Windows-only env vars like PYTHONLEGACYWINDOWSFSENCODING.

Changes are maybe also needed for Mac OS X and Android, which always use UTF-8. Currently, the locale encoding is still used on these platforms (ex: by open()). Is it possible to a locale encoding different than UTF-8 on Android for example?