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

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

Fix compilation of newkey(8) with WITHOUT_NIS=yes.

Increasing WARNS seems to have broken compilation of this utility.
Instead of lowering WARNS, just fix to code to compile properly.

Submitted by: <bf2006a yahoo com>
Tested by: bms

Avoid usage of implicit int.

ANSIfy, VCS inclusions and some very minor style.

remove __P

WARNS=2 fixup.

Turn on YP (NIS) while I'm about it.

Fix the type of the NULL arg to execl()

Idea from: Theo de Raadt <deraadt@openbsd.org>

$Id$ -> $FreeBSD$

Calls one or more of malloc(), warn(), err(), syslog(), execlp() or
execvp() in the child branch of a vfork(). Changed to use fork()
instead.

Some of these (mv, find, apply, xargs) might benefit greatly from
being rewritten to use vfork() properly.

PR: Loosely related to bin/8252
Approved by: jkh and bde

Replace incomplete malloc prototype with #include <stdlib.h>
to get the proper one.

Add usage(), use err(3).
Rewrote man page in mdoc format.

This commit was generated by cvs2svn to compensate for changes in r26238,
which included commits to RCS files with non-trunk default branches.

Import newkey.

This is the program used to generate new Secure RPC public and secret
key pairs.