[Users] Dispatching to and checking for trusted UACs

[Juha Heinanen]

Andreas Granig writes:

 > Wouldn't it be sufficient for supporting classification to let the user 
 > optionally just pass the grp_id to load_gws() and from_gw() and extend 
 > the db query and the src-addr check to take that id into account?

db_query cannot be made more complex than what it already is.  someone
reported that even the current query takes too much mysql time and
therefore caching was developed.

like i did, i would prefer to leave gw selection as it is and write
introduce new peer functions.  those could very well take a class as
argument.

-- juha