Update HISTORY section.

Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

style.Makefile.5: Wordsmith .PATH description

MFC after: 3 days
Fixes: 1ac5586c6d86 style.Makefile.5: Do not require $FreeBSD$ SCM IDs

style.Makefile.5: Remove $FreeBSD$ from examples

MFC after: 3 days

style.Makefile.5: Stop documenting NO_MAN

NO_MAN has been an error since 2020 according to UPDATING.

PR: 231357
MFC after: 3 days

style.Makefile.5: Do not require $FreeBSD$ SCM IDs

It's no longer required to have those SCM IDs at the start of makefiles.

MFC after: 3 days

Rename NO_WERROR -> MK_WERROR=no

As suggested in D27598. This also supports MK_WERROR.clang=no and
MK_WERROR.gcc=no to support the existing NO_WERROR.<compiler> uses.

Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D27601

style.Makefile: list CSTD between WARNS and CFLAGS

This was suggested by emaste in https://reviews.freebsd.org/D25928 and
matches most uses in the tree.

Document that we use {} for variable expansion.

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

mdoc: Remove tabs in non-literal context.

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Replace "/etc/make.conf" with references to make.conf(5)
where applicable. The main reason for this change is that
the location of make.conf is not constant and can be
modified via __MAKE_CONF. This change also improves
hyper-text linkage in our manpages.

MFC after: 2 weeks

Fix a grammar nit of mine.

-mandoc style tweak rev 1.13.
Submitted by: ru

Catch up with the latest policies on knobs.

[NO]MAN -> NO_[MAN].
Bump doc date.

Fix a spelling error.

mdoc(7): EXAMPLES is the standard section name.

Fixed mispelling of SCRIPTS as SCRIPT.

Document SHLIB, kind of.

mdoc(7): Use the new feature of the .In macro.

Punctuation.

Another traffice ticket for crossing the .'ed line from the mdoc police.

Submitted by: ru

Also allow and document a "build" ordering for variables.
Both "product" and "build" ordering are rampant in /usr/src. This document
is not indented to be as strict as style(9) as historically BSD hasn't been
as consistent about Makefile as C code. Also there are too many variations,
exceptions and allowances in out existing Makefile style to be strict.
However there is a general level of consensus on what the general BSD style
of our Makefiles is. This manpage documents that "smell".

o Do not use VPATH.
o Give the proper spelling for WARNS.
o Clarify using NO_WERROR.
o Embelish -D after -I verbage.
o Document preference of ${.ALLSRC} & ${.TARGET} vs. $< & $@.

Based on: brucification

Mdoc police.

Submitted by: ru

FreeBSD Makefile style guide.

Approved by: TRB