use in the comment in rc.conf again, idea & ok theo

once at startup. ntpd delays daemonizing until it has done the intial
time setting (or ran into the timeout) in this mode to make sure stuff started
later in rc is not subject to time jumps.
this eleminates the need to run rdate -n beforehands.
with some input from & ok ryan and bob, march music from mickey

doesn't by us anything. discussed with ryan during dinner at original joe's

ok miod@ henning@ deraadt@

from frank bax on misc@;
ok deraadt@

From Peter Galbavy.

enum imsg_type and not an int

-don't buf_free() on imsg_add() errors, it already does that for us
-use imsg_close() instead of buf_close(), does error handling already

does the error checking for us.

-kill the _pid flavors of imsg_create and imsg_compose, and just add pid as
argument to those
-use imsg_create in imsg_compose instead of duplicating code
-check for datalen overflow

micsky some time ago, ok otto

we match API's against each other, fun eh; millert ok

int instead of int; millert ok

with & ok otto millert claudio, ok deraadt canacar

ntpd exiting on sendmsg() failures, which is not desired.

wander around akikhabara with a usb cd drive and an openbsd cd, testing
for laptops that support apm as god intended.

Noticed by ian@

OK deraadt@

ok millert jmc pedro

ok ho@ henning@

jmc@.