py2/py3 patches reviewed

[github at samba.org]

New comment by abartlet on Samba Github repository

https://github.com/samba-team/samba/pull/185#issuecomment-388576804
Comment:
This is now in autobuild, except for the top patch around the DNS high byte (0xff).  I want to think on that some more, we really want to force a high byte into the end record, so I'll check on this more with @GSam tomorrow.  If a genuinely valid UTF8 sequence with a high byte will satisfy then we may wish to use that.