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 the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

Document that unexpand(1)'s -a and -t options are exclusive.

PR: docs/85063

Added the EXIT STATUS section where appropriate.

Mechanically kill hard sentence breaks.

Add support for multibyte characters and for characters that take up
more than one column position.

mdoc(7) police: markup polishing.

Approved by: re

ANSIify function definitions.
Add some constness to avoid some warnings.
Remove use register keyword.
Deal with missing/unneeded extern/prototypes.
Some minor type changes/casts to avoid warnings.

Reviewed by: md5

Consistently use FBSDID

Remove obsolescent -tabstop option from Synopsis (it was already removed
from the usage() message). Document what the -t option does in a more
standard place. Add a standard Diagnostics section.

Allow <blank>s to be used to separate tab stop positions with the -t
argument, not just ASCII space characters and commas. Don't count
non-printing characters when determining column position.

If processing of one file fails, try to process the remaining files and
exit non-zero instead of immediately exiting (SUSv3).

Add the -t option, which allows tab stop positions to be specified similarly
to the way expand(1) allows. This brings unexpand(1) up to SUSv3 conformance,
and it now passes all relevant parts of the GNU textutils test suite.

PR: 35621
Reviewed by: mike

Use `The .Nm utility'

remove __P

Boundary check an array holding tab stops.

PR: bin/35590
Submitted by: "Tim J. Robbins" <tim@robbins.dropbear.id.au>

Remove leaf node WARNS?=2 (that mainly I added). This should
help the GCC3 transition and CURRENT in general.

mdoc(7) police: removed HISTORY info from the .Os call.

Include missing header files which define functions for which gcc has
builtins (e.g., exit, strcmp).

This compiles cleanly with WARNS=2; make sure it stays that way.

Don't arbitrarily limit tabstop expansions to 256 characters.

Submitted by: Oliver Fromme <oliver.fromme@heim3.tu-clausthal.de>

mdoc(7) police: split punctuation characters + misc fixes.

mdoc(7) police: use the new features of the Nm macro.

Use errx(), remove unused #include. Correct SYNOPSIS

$Id$ -> $FreeBSD$

Add $Id$, to make it simpler for members of the translation teams to
track.

The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;

.\" $Id$
.\"

If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.

Approved by: bde

Tweaks to allow compiling -Wall (mostly adding "const" to char rcsid[]).

PR: bin/5529
Submitted by: Shigio Yamaguchi <shigio@wafu.netgate.net>

Do not misinterpret file names with a digit in the 2nd column as
a tab stop specification.

Add usage(), rcsid. Use getopt().
Obtained from: OpenBSD.

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.