This is not a validator. it is used more like
a value transformer. It will transform the parameter
with name "passwd" into a MD5 hash using the following
combination: userlogin:passwd
This validator must be used after all the other validators,
because it does assume that the password and userogin parameters
have been already validated.
Creation date: 10/03/2004
Last Update: 10/03/2004
(c) 2004 Martin Cordova
This code is released under the LGPL license
author: Martin Cordova (dinamica@martincordova.com)