Misc py3 c modules

[github at samba.org]

New comment by abartlet on Samba Github repository

https://github.com/samba-team/samba/pull/152#issuecomment-376805030
Comment:
See https://gitlab.com/catalyst-samba/samba/commit/c3398f593c67fe2aba9e91868cefcdde313018ad for Joe's work trying to get the modules linking against the right thing.

Joe's current work is at 
https://gitlab.com/catalyst-samba/samba/commits/misc-py3-c-modules-joeg-fork
the CI failed for him, but on (seemingly) unrelated things.