I intend to move these into lib/libthr/tests/ and connect to kyua. This
is a first step to address warnings emitted when building using standard
make infrastructure.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34306
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will be
addressed in a future commit.