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 r233648:
Remove trailing whitespace per mdoc lint warning

Approved by: cperciva (implicit)

Merge r233257, r233258 from head:
Don't run through time checks when entry is definitely oversized. This
leads to newsyslog rotating on (size OR time) if both are specified.

Fix a sentence in a paragraph that describes time and interval based
trimming. This sentence vaguely can be interpreted as if it was speaking
about time and size interaction, while it wasn't about it.

PR: 100018, 160432

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

Approved by: re (implicit)

Add new modifier - "R", when it is specified the path to pid file
will be considered as a path to a binary or a shell script to be executed
after rotation has been completed instead of sending signal to the process
id in that file.

Sponsored by: Sippy Software, Inc.
From the: FreeBSD hacking lounge at BSDCan

Add an example for the use of the <include> entry to help others
who are as slow as I am.

Discussed with: gordon

Use correct alphabetical order for xz(1) in SEE ALSO section
of newsyslog manpages.

Reported by: maxim
MFC after: 3 weeks

Add xz(1) support to newsyslog.
Rewrite and simplify logfile compression code.

Approved by: gad
MFC after: 3 weeks

Add a -S switch to override the default syslog pid file. This can be useful
if syslogd's -P switch or a syslogd alternative is being used.

MFC after: 3 weeks

Add file include processing for newsyslog.

Format for the include line in /etc/newsyslog.conf is:
<include> /etc/defaults/newsyslog.conf

Other notes of interest:
Globbing is supported in <include> statements.
Properly detect circular include loop dependencies.

Reviewed by: gad@
Approved by: wes@ (mentor)
MFC after: 2 months

Fix 6-year old cut&paste error. The # could be escaped with '\', not
with '\\'.

MFC after: 2 weeks

s/effect/affect/

PR: docs/118266
Submitted by: "Kim Scarborough" <sluggo at unknown dot nu>
MFC After: 3 days

Markup fixes.

Remove mention of the `W' flag, which has been turned to no-op by the
neworder change. Keep the option in a config file parser, to not
violate POLA.

MFC after: 2 weeks

Fixed xrefs.

Assorted markup, grammar, and spelling fixes.

Add a 'D' flag that can be specified on entries in newsyslog.conf.
If specified, the matching log files will have the NODUMP flag set
on them after they are created.

Submitted by: Sean Eric Fagan
MFC after: 16 days

Move newsyslog.conf.5 to usr.sbin/newsyslog. There is no real history
other than 'initial revision' thus I did not request a repocopy.

Requested by: ru, gad