Enable Memcached Connection Pooling

I've created a patch that enables connection pooling for the Memcached PECL extension. More information regarding the changes can be found at http://us3.php.net/manual/en/memcached.construct.php

I've never submitted patches to Drupal before but I followed the coding style closely. I suppose you'd want to have some sort of option to enable/disable connection pooling but how does this look so far?

Thanks,
Chris Blay