[patch] Docstring fixes

[Jesper Harder]

GNU Emacs 21.3.50.75 (i686-pc-linux-gnu)

Hi!

Here's a trivial patch that fixes documentation strings to not quote
`nil' and `t' as recommended in the elisp manual:

   * When a documentation string refers to a Lisp symbol, write it
     [..] with single-quotes around it.  For example: `lambda'.  There
     are two exceptions: write t and nil without single-quotes.

docstring.diff
Description: Text Data

It's probably too uninteresting for detailed Changelog entries, but
here they are in case you want them anyway:

emacs/lisp/ChangeLog:

        * progmodes/compile.el (compile-internal): Don't quote nil and t
        in docstrings.

        * emacs-lisp/eldoc.el (eldoc-echo-area-use-multiline-p): do.

        * emacs-lisp/cl-macs.el (case, typecase): do.

        * allout.el (allout-auto-activation)
        (allout-use-mode-specific-leader, allout-reindent-bodies)
        (allout-unprotected): do.

        * progmodes/tcl.el (tcl-explain-indentation): do.

        * progmodes/idlwave.el (idlwave-complete-special): do.

        * progmodes/cpp.el (cpp-edit-list): do.

        * progmodes/cperl-mode.el (cperl-lineup): do.

        * progmodes/cc-align.el (c-lineup-argcont, c-lineup-gcc-asm-reg): do.

        * play/mpuz.el (mpuz-silent): do.

        * play/decipher.el (decipher-ignore-spaces): do.

        * net/rlogin.el (rlogin-process-connection-type): do.

        * mail/rmail.el (rmail-primary-inbox-list): do.

        * mail/mailalias.el (mail-directory-function)
        (mail-directory-requery, mail-directory): do.

        * emacs-lisp/lucid.el (buffer-syntactic-context): do.

        * emacs-lisp/lmenu.el (popup-dialog-box): do.

        * type-break.el (type-break-good-rest-interval)
        (type-break-query-mode, type-break-query-function)
        (type-break-mode-line-message-mode): do.

        * skeleton.el (skeleton-autowrap, skeleton-untabify)
        (skeleton-newline-indent-rigidly, skeleton-insert)
        (skeleton-read): do.

        * simple.el (newline): do.

        * ps-print.el (ps-zebra-stripe-follow): do.

        * mwheel.el (mouse-wheel-scroll-amount): do.

        * env.el (setenv): do.

emacs/lisp/gnus/ChangeLog:

        * gnus-cus.el (gnus-group-parameters): Don't quote nil and t in
        docstrings.

        * gnus-score.el (gnus-score-lower-thread): do.

        * gnus-cus.el (gnus-group-customize, gnus-score-parameters): do.

        * gnus-art.el (gnus-article-mime-match-handle-function): do.