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

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

MFC r227482:

The default setting, daily_accounting_compress="NO", was causing
only 1 old file to be saved, so fix this.

While I'm here, fix a very old off-by-one error causing 1 more
file than specified in daily_accounting_save to be saved because
acct.0 was not taken into account (pun intended). Change that, and
use a more thorough method of finding old files to delete. Partly
just because this is the right thing to do, but also to silently
fix the extra log that would have been left behind forever with the
previous method.

Approved by: re (kensmith)

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

Approved by: re (implicit)

Update how accounting log files are rotated.

The old version had a race between the time that the old file was
cp'ed to acct.0 and the time that 'sa -s' was run that prevented
the commands that occurred in the meantime from being backed up.

It's also arguable that the old version was inefficient in using
cp which can be a problem on a space-constrained system.

This version avoids both problems, albeit it's considerably more
complicated. The advantage of putting the log rotation in the rc.d
script is that it can handle the _enable and _file questions without
having to do gymnastics to discover either value in the periodic script.

As a side effect of reviewing the rc.d script I cleaned it up a bit.

Remove trailing white space. No functional changes.

Default daily_accounting_flags to -q. I thought this was a typo in the
originally submitted patch (oops!).

Also check for an empty $daily_accounting_save.

Submitted by: Udo Schweigert <Udo.Schweigert@cert.siemens.de>

Add $daily_accounting_save and $daily_accounting_flags

Submitted by: Udo Schweigert <Udo.Schweigert@cert.siemens.de>
MFC after: 2 weeks

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

Allow compressed acct files

PR: 19483
Submitted by: Ben Smithurst <ben@scientia.demon.co.uk>

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

$Id$ -> $FreeBSD$

Cosmetic changes.
Submitted by: Philippe Charnier <charnier@xp11.frmug.org>

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.