radrelay integration & other issues

[Alan DeKok]

  I've been looking into the issues surrounding adding radrelay to the
server.  While it's made some things better, it's made other things
worse.

  In the future, I'd like to add tacacs+ to RADIUS gatewaying (bug
#254), and radsec.  After working on it for a while, it appears to be
easier and better to do these as separate gateways, rather than
integrating them into the server.

  So... maybe pulling radrelay out of the server isn't a bad idea,
either.  We could take a page from "radzap", and make radrelay into a
tiny program that runs radclient, and sends the data to a server.  It
could even start the server itself, and monitor the server for process
death.  So it could still *look* like one program, even if 3-4 are
running behind the scenes.

  That would be simpler and easier to manage.

  Comments?  Flames?  Other priorities?

  Alan DeKok.