cucidhcp merged

[Stephen R. van den Berg]

I took the liberty to drop all DHCP-relaying code, i.e. freeradius
cannot be used as a dhcprelay, freeradius *will* respond properly to
a request forwarded through another relay.

The DHCP relaying functionality is not really a functionality where
there is much to decide or configure.  It's best left to a dedicated
DHCP relay daemon (they exist, are quite small and efficient).
-- 
Stephen.