bugfix: /Makefile: mk_db: plpython3u: use CREATE EXTENSION instead of createlang so that the plpython3u extension is created in addition to the plpython3u language (as it is on Linux)
bugfix: /Makefile: mk_db: plpython3u: use CREATE EXTENSION instead of createlang so that the plpython3u extension is created in addition to the plpython3u language (as it is on Linux)