Make these work with today's curses and termcap reality.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCS Id Police.

clean up import

repeat after me: "I hate rcs ids"

update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs. new doc layout thang.