Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

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

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

Update nvi-1.79 to 2.1.1-4334a8297f

This is the gsoc-2011 project to clean up and backport multibyte support
from other nvi forks in a form we can use.

USE_WIDECHAR is on unless building for the rescue crunchgen. This should
allow editing in the native locale encoding.

USE_ICONV depends on make.conf having 'WITH_ICONV=YES' for now. This
adds the ability to do things like edit a KOI8-R file while having $LANG
set to (say) en_US.UTF-8. iconv is used to transcode the characters for
display.

Other points:
* It uses gencat and catopen/etc instead of homegrown msg catalog stuff.
* A lot of stuff has been trimmed out, eg: the perl and tcl bindings which
we could never use in base anyway.
* It uses ncursesw when in widechar mode. This could be interesting.

GSoC info: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2011/zy/1
Repo at: https://github.com/lichray/nvi2

Obtained from: Zhihao Yuan <lichray@gmail.com>

Rename O_DIRECTORY to O_TMP_DIRECTORY to avoid shadowing the fcntl.h
O_DIRECTORY flag.

PR: bin/173924
Obtained from: git://repo.or.cz/nvi.git

Close buffer overflow noted in security advisory DSA-085.
Submitted by: Koga Youichirou <y-koga@jp.FreeBSD.org>
Obtained from: Debian

It is just stupid to have to do ``<ESC>!rm -f %'' to write a file you own.
So lets stop that nonsense and allow `w!' to do something useful.

Submitted by: green

10 X's in mkstemp().

Set the close-on-exec flag when we lock the file we're editing.
This prevents any background sub-command executed from inheriting
the descriptor & lock (and making vi think that someone else is
editing the file when it re-edits).

Remembered from: An OpenBSD commit message from May '99

This commit was generated by cvs2svn to compensate for changes in r19304,
which included commits to RCS files with non-trunk default branches.

Import of nvi-1.79, minus a few bits that we dont need (eg: postscript
files, curses, db, regex etc that we already have). The other glue will
follow shortly.

Obtained from: Keith Bostic <bostic@bostic.com>