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 r231990

Update to tcsh 6.18.01

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

Approved by: re (implicit)

Let csh(1) use utmpx instead of utmp.

csh allows you to monitor the utmp(x) file to monitor certain user
logins. Unfortunately it needs to directly stat() this file. I don't
want to break this module , but eventually it shouldn't do that. The
idea of the getutxent(3) API is to hide file access.

Approved by: mp

Work around a vendor issue that was causing the builtin malloc to be
used instead of the system malloc.

Submitted by: ume

Build updates for tcsh-6.15.00 import.

Reviewed by: ume
Reminded by: Divacky Roman
MFC after: 1 week

Bump up BUFSIZE from 4k to 8k. This was requested by portmgr@ to allow
ports builds in the cluster to work correctly.

Tested by: kris

Add in FreeBSD specific options for tcsh 6.14.

Fix typo

Use LC_MESSAGES locale category instead of value of LANG environment variable
while opening of tcsh's message catalog. It gives us more flexibility, and
do not change current behaviour (since we call setlocale() here)

Submitted by: Rostislav Krasny <rosti_bsd@yahoo.com>
PR: bin/76773
MFC After: 3 days

KANJI and DSPMBYTE are now "on" by default in the tcsh 6.13.00 distribution.

Enable BSD style color ls support.

PR: 23161
Submitted by: Anand Ranganathan <anand@blandings.com>

Fix a "#ifdef" where a comparison operator was used.
GCC 2.96 does not like this.

Activate Japanese NLS and KANJI support

MBYTEDEBUG not needed for "WANT_KANJI"

Submitted by: Hajimu UMEMOTO <ume@mahoroba.org>

Until it's impact is better understood, only active KANJI/DSPMBYTE/MBYTEDEBUG
if "WANT_KANJI" is defined in /etc/make.conf.

Submitted by: Hajimu UMEMOTO <ume@mahoroba.org>

Use our system malloc().

Upgrade csh.