some makefile de-linting

MKfoo=no -> NOfoo=

convert from NOxxx= to MKxxx=no.
include <bsd.own.mk> if testing a MKxxx variable.

merge with Lite, new RCS id conventions, etc.

Add RCS identifiers.

branches: 1.1.1;
Initial revision

morse: clean up

No binary change on amd64.

branches: 1.22.2;
games/morse: fix out-of-bounds memory read

Could be triggered by running 'morse äöü', caused by the typical
<ctype.h> usage mistake.

games/morse: reduce runtime relocations, to save disk space

add 2004's "@" definition.

games: remove trailing whitespace in *.c and *.h

Add _, from Eitan Adler in PR bin/52897

WARNS=5, and make WARNS=5 the default for src/games.

branches: 1.16.6;
sprinkle static

Remove the \n and tabs from the __COPYRIGHT() strings.

branches: 1.14.6;
Make this build with WARNS=4 by not reusing names from ctype.h.

branches: 1.13.22;
Encode and decode more characters. Don't put commas after every
character. Don't encode whitespace as "...". Don't fail decoding
across a 1024-byte boundary. Mark end of message appropriately. From
OpenBSD but with punctuation taken from ITU-T Recommendation F.1
(03/98).

Remove uses of __P.

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

Patches provided by Joel Baker in PR 22269, verified by myself.

More include additions for exit, abs, strcmp, etc.

Use setgid(), not setregid().

Security improvements for games (largely from or inspired by OpenBSD).

Games which run setgid from dm, but don't need to, should drop their
privileges at startup.

Games which have a scorefile should open it at startup, then drop all
privileges leaving just the open writable file descriptor. If the
game can invoke subprocesses, this should be made close-on-exec.

Games with scorefiles should make sure they do not get a file
descriptor < 3. (Otherwise, they could get confused and corrupt the
scorefile when using stdin, stdout or stderr.)

Some old setuid revokes from the days of setuid games change into gid
revokes.

Add use of `const' where appropriate to the games.

This merges in all such remaining changes from the Linux port of the
NetBSD games, except in hunt (where substantial changes from OpenBSD
need to be looked at).

Some such changes were previously covered in PRs bin/6041, bin/6146,
bin/6148, bin/6150, bin/6151, bin/6580, bin/6660, bin/7993, bin/7994,
bin/8039, bin/8057 and bin/8093.

Add support for decoding of morse code.

fix usage

WARNSify

merge with Lite, new RCS id conventions, etc.

Add RCS identifiers.

branches: 1.1.1;
Initial revision