GitLab

* play/decipher.el (decipher-mode, decipher-stats-mode):
* play/gomoku.el (gomoku-mode):
* play/snake.el (snake-mode):
* play/solitaire.el (solitaire-mode):
* play/tetris.el (tetris-mode): Use run-mode-hooks.

* play/landmark.el (lm-mode):
* play/mpuz.el (mpuz-mode): Use kill-all-local-variables and
run-mode-hooks.

Remove various redundant `(t nil)'.
(tetris-border-options): Use color on tty if available.

(tetris-use-glyphs, tetris-use-color, tetris-draw-border-with-glyphs)
(tetris-default-tick-period): Convert to defcustom.
Added * in docstring to indicate user variable.
(tetris-update-speed-function, tetris-mode-hook, tetris-tty-colors)
(tetris-x-colors, tetris-buffer-name, tetris-buffer-width)
(tetris-buffer-height, tetris-width, tetris-height)
(tetris-top-left-x, tetris-top-left-y): Convert to defcustom.

instead of a literal "/tmp".  Suggested by Robert
<robert@chezmarshall.freeserve.co.uk>.