MFC r261296:

MFC r261296:

Merge from CheriBSD:
commit c1acf022c533c5ae27e0cd556977eafe3f5959eb
Author: Brooks Davis <brooks@one-eyed-alien.net>
Date:   Fri Jan 17 21:46:44 2014 +0000

	Add an option WITHOUT_NCURSESW to suppress building and linking to
	libncursesw.  While wide character support it useful we'd like to
	only need one ncurses library on embedded systems.

Sponsored by:	DARPA, AFRL

git-svn-id: svn://svn.freebsd.org/base/stable/10@262643 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f