Move atrun(8) functionality into cron(8) proper. This fixes the

long-standing annoyance that atrun's granularity is 10 minutes.
Most at jobs run with a 1 minute granularity.  Jobs submitted via
"at now" or "batch" will run immediately.  Includes a rewritten
cron(8) man page.  at(1) will be integrated more closely into
cron at a future date.
Upgrading notes:
the atrun job in root's crontab should be removed.
the /var/at/spool directory is no longer used

src/etc/crontab

@@ -1,4 +1,4 @@
-#	$OpenBSD: crontab,v 1.9 2001/09/11 19:03:55 millert Exp $
+#	$OpenBSD: crontab,v 1.10 2002/07/15 19:13:28 millert Exp $
 #
 # /var/cron/tabs/root - root's crontab
 #
@@ -8,8 +8,6 @@ HOME=/var/log
 #
 #minute	hour	mday	month	wday	command
 #
-*/10	*	*	*	*	/usr/libexec/atrun
-#
 # sendmail clientmqueue runner
 */30	*	*	*	*	/usr/sbin/sendmail -L sm-msp-queue -Ac -q
 #

src/etc/mtree/4.4BSD.dist

@@ -1,4 +1,4 @@
-#	$OpenBSD: 4.4BSD.dist,v 1.132 2002/07/11 12:19:31 markus Exp $
+#	$OpenBSD: 4.4BSD.dist,v 1.133 2002/07/15 19:13:29 millert Exp $
 
 /set type=dir uname=root gname=wheel mode=0755
 # .
@@ -1853,11 +1853,6 @@ jobs		gname=crontab mode=01770
 # ./var/at/jobs
 ..
 
-# ./var/at/spool
-spool		mode=0700
-# ./var/at/spool
-..
-
 # ./var/at
 ..