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

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

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

Sync program's usage() with manpage's SYNOPSIS.

Include <stdlib.h> for exit().

ANSIfy, VCS inclusions and some very minor style.

remove __P

WARNS=2 fixup.

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

$Id$ -> $FreeBSD$

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.