form the last 8 replied received from a peer, find the one with the lowest
delay. Use that as the peer's update taken into account for calculating
the local clock's offset.
Invalidate that reply and all ones received earlier than it so that they do
not get used again.

function until henning showed me the light... log_sockaddr... nifty);
this diff is from henning and should be henning ok =)

in base instead. theo ok & rush to go for beer

for now, average over those to adjust the local clock.

adjtime() when necessary to keep the local clock in sync
yes, that means ntpd syncs the local clock now.

ok henning@

from kjell@

reported by Peter Hessler.  ok henning@

"looks fine" millert@

Now passes the regress tests.

Simpler licence, update copyright years, trim empty lines, ISO declarations.
okay miod@

ok pedro@, millert@

noticed by millert@

limit on OPEN_MAX, modeled after bgpd

ok msf@ hshoexer@ krw@ millert@

hook the descriptors into the main poll and such.
we're not doing anything with the reply we recive yet, tho.
mostly hacked on the Frankfurt->Montreal flight, as batteries and those
horrible air canada seats permitted...

should only be 255.  You would think they would be the same but you'd be
wrong.