Update to 2.0.0 mysql agent
known issue that the service doesn't restart as expected, everything else seems to work
Write pid to pidfile as user
Pidfile was created blank because $! was not available outside of su; prevented service from stopping correctly.
Update memcached java agent to 2.0.1
Merge pull request #27 from danieldreier/mysql_plugin_2.0.0

Update mysql plugin to 2.0.0, memcached java to 2.0.1