curs_pad(3) on FreeBSD

The text 7be70c92714e, as FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.

create and display ncurses pads

curs_pad(3) on FreeBSD now