Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

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

Constify format string pointer, otherwise this would trigger warning when
higher warning level is enabled.

Fix the problem that the entry broke into two lines with multi-byte
AM/PM format.

Reported by: takawata

w(1) uses strftime %b with to print the abbreviated month name
if a user logged in more than a week ago.
This may contain multibyte characters (e.g. when using UTF-8).
This string is then aligned on byte-length rathern than char-length,
resulting in misalignment and unfinished multibyte characters.

PR: 126657
Submitted by: Johan van Selst <johans@stack.nl>

ANSI style function declarations.

WARNS=2 fix, use __FBSDID() and sort includes.

WARNS=2 not added to Makefile as it is to become default.

Fix width for printing time

Oops, remove tabs sneaked in wrong place

Use AM/PM time only when available in locale

Fix cosmetic bug in time display. Current day logins are now displayed
as plain time as originally intended, instead of displaying DayHH times
when the login time happens to be prior the GMT - TZ difference.
(Only noticable on systems operating east of GMT/UTC).
Local times are now used to determine the day.

$Id$ -> $FreeBSD$

Fix the annoying bug introduced in rev 1.18 that caused each line to be
one character shorter than the previous in a stairstep fashion when long
idle times were involved.

A couple of nits:
- spelling/typo fix.
- some of the easier style(9) fixes where it was bothering me.
- Handle 100+ days idle time (ha!). Probably the right thing to do is
to do a snprintf into a buffer and strlen the result rather than doing
hackery on magic numbers.

XXX the wide (and mostly unused) username and tty columns annoy me since
it it could be used for more useful information for the command. We should
actually count the largest username and tty and adjust like 'ls -l' does.

-Wall cleanup.

Revert some casts I introduced.
Requested by: Bruce.

Typo in usage(). Err -> errx when testing allocations.

Made sure the string formated by strftime() is properly
null-terminated.

Should go to RELENG_2_1 and RELENG_2_2.

Reviewed by guido@freebsd.org.

Reduce the command field width by one when idle time is > 9 days, to
eliminate unsightly blank line.

Possibly a 2.2 candidate.

Fix one column wrong offset in previous change days->day

Print "1day" instead of "1days"

Delete bogus referneces to timezone code internal header file `tzfile.h',
which is no longer bogusly installed in /usr/include.

Remove trailing whitespace.

idle time == 0 printed now as "-" like in good old BSD
skip cua* 3 chars as tty* 3 lchars

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

BSD 4.4 Lite Usr.bin Sources