Update docs for encryption configuration

Freddy and James,

You might remember that I submitted a merge request to correct the
documentation for the "encryption" setting:

https://gitorious.org/freetds/freetds/merge_requests/9

and it was merged on 2013-10-19.

I just noticed that the documentation online never got updated:

http://www.freetds.org/userguide/freetdsconf.htm

Maybe someone needs to rerun a job to build and publish the docs?

Marc
http://marc-abramowitz.com/