Add MariaDB, SQLite3 and PostgreSQL python adapters + Qt plugins to the Natron binary distrib.

[devernay]

Problem

we already ship the MariaDB/MySQL and SQLite3 Qt plugins, we should also add:

• the PostgreSQL Qt plugin
• the MariaDB/MySQL, SQLite3 and PostgreSQL python adapters:
  • http://initd.org/psycopg/
  • https://dev.mysql.com/doc/connector-python/en/
  • https://docs.python.org/2/library/sqlite3.html

[devernay]

This issue was moved to NatronGitHub/Natron#228