[m-users.] Add: thread-safe, improved ODBC library

[Volker Wysk]

Hi!

If uploaded the first (1.0.0) version of a thread-safe ODBC library to
Gitlab:

https://gitlab.com/volkerwysk/odbc

This is derived from the "extra" ODBC library, but it's a major revamp.

Cheers,
Volker