Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Remove trailing white space. No functional changes.

Fix output and exit status when daily_mailq_shorten is set to YES

PR: conf/93472
MFC after: 3

When there are no interesting information in output, exit with 0.

PR: conf/92299
Submitted by: Petr Rehor <prehor@gmail.com>
Approved by: philip (mentor)
MFC after: 3 days

Avoid using perl in the periodic & security scripts. This brings the
base system one step closer to being totally perl-free.

Approved by: re (jhb)

Fix the output when daily_status_mailq_shorten is set to YES

PR: 23766
Mostly submitted by: lambert@ssabsd.csw.net
MFC after: 3 days

Update mail queue related periodic scripts to account for sendmail 8.12's
clientmqueue (submit mail queue).

The new mailq display is only active if both the old
daily_status_mailq_enable is set to "YES" and the new
daily_status_include_submit_mailq is set to "YES" so people who disabled
440.status-mailq won't have any surprises.

Likewise, the new queue run is only active if both the old
daily_queuerun_enable is set to "YES" and the new daily_submit_queuerun
is set to "YES" so people who disabled 500.queuerun won't have any
surprises.

While I am here, remove the [ ! -d /var/spool/mqueue ] checks from
both scripts as the queue directory isn't always /var/spool/mqueue for
the main daemon -- it can be set to anything in the sendmail.cf file.

MFC after: 1 week

Another overhaul of the periodic stuff.

All periodic sub-scripts <larf> now have their return codes interpreted
by periodic(8). Output may be masked based on variable values in
periodic.conf.

It's also now possible to email periodic output to arbitrary addresses,
or to send it to a log file, examples of which can be found in
newsyslog.conf.

The upshot of it all should be no discernable changes to the default
behaviour of periodic(8).

PR: 21250

Introduce /etc/defaults/periodic.conf, similar in concept to rc.conf.
The only change in the default functionality should be that
the output reports are slightly more verbose WRT files deleted.

Not objected to by: freebsd-arch

$Id$ -> $FreeBSD$

Changed /usr/sbin/mailq to /usr/bin/mailq

Add an example for busy mail servers, commented out.

This commit was generated by cvs2svn to compensate for changes in r28263,
which included commits to RCS files with non-trunk default branches.

Copy /etc/cron.d to /etc/periodic per-request of many.
This wasn't done with a repository copy because there was no
history of any consequence. Flames to me.