Message 104005 - Python tracker

key_file and cert_file are mandatory (see newPySSLObject()) and bytearray are now more accepted by PyUnicode_FSConverter() (see #8485). New version of the patch is simpler and shorter.

Support bytearray is a little bit to much complex for me (because of the GIL and bytearray lock), I prefer to leave 3.1 unchanged (I will not backport this patch).