Memcached and mail

Hi,

First off, I'm sorry but I messed up with this branch: I've ended doing 2 changed instead of one, but I think you'll aprove both of them.

1. I've added memcached support. It's pretty simple and in the like of previous monitors.
2. I've removed the mail alter conf as a template and added it as a file. I've done this because the present template doesn't allow us to actually template the conf and implementing that template will take an amount of time that I cannot afford at the moment. As such, I've come to this compromise. I want to implement it as a template but it will have to be later.

Thanks.