Fetching users from external source

[mlstfr at ntcomputer.de]

>> Also, guest accounts will be modified while freeradius is running. I need a way to inform freeradius (using SIGHUP?) to reload the user list from the server. Do you have a recommendation on how to achieve this in real-time?
> Use a database. That's what databases are for! That way the server does not need to be restarted.

Having seen the amount of tables and properties in the sql module, I 
assumed it would be both overkill and too complicated to set up for my 
quite simple usage scenario. But maybe I am mistaken and it is as easy 
as giving freeradius the credentials and putting the usernames & 
passwords in a single table?