Moved nearly all remaining code out of radiusd.c, and into

	Moved nearly all remaining code out of radiusd.c, and into
	event.c

	This means that the main server loop is purely event-driven,
	by sockets and by timed events.

	There are still a few FIXME's, like adding newly-created proxy
	sockets to the event loop, but that shouldn't be hard to fix.

	The result is that the code is (again) much easier to
	understand.  Also, we hope that HUP support will be easier to
	add after this change.