curs_touch(3) on FreeBSD

The text 0f2ec2d1bd7c, as FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.

ncurses refresh control routines

curs_touch(3) on FreeBSD now