- change source from MySQL-python to mysqlclient, which is a fork of the
former. The former project hasn't seen any updates in years.
- this is also in anticipation of the upgrade of MariaDB from 10.1.x to
10.2.x. With the latter python-mysql does not compile - mysqlclient
does.
- the patch is dropped as libmaria is threadsafe anyway.
- add variant for Python3.
Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>