Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Remove the third clause for the Berkeley parts of games, per the
letter in /COPYRIGHT.

Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.

Style fixes to: #include ordering; use const and static; ANSI functions;
various usage synopses; bogus and/or unnecessary casting; exit values;
use LINE_MAX instead of magic numbers; declare extern variables in a
header; add $FreeBSD$ where missing.

Reviewed by: markm, obrien
Obtained from: NetBSD | fanf

This commit was generated by cvs2svn to compensate for changes in r2490,
which included commits to RCS files with non-trunk default branches.

Bring in the 4.4 Lite games directory, modulo man page changes and segregation
of the x11 based games. I'm not going to tag the originals with bsd_44_lite
and do this in two stages since it's just not worth it for this collection,
and I've got directory renames to deal with that way. Bleah.
Submitted by: jkh