add support for MySQL compressed and encrypted connections

http://us2.php.net/manual/en/mysql.constants.php#mysql.client-flags

Added the ability to toggle off the use of compressed or SSL connections to the MySQL database. If a database requires a secure connection poMMo does not have the ability to connect. This adds the ability to enable it. Also adds compression to the connection as as an option as well.

P.S. : not sure why the diff for the config files looks like that, but only two config options were added. I assume since the whitespace changed or the lines changed Github is showing it that way.