Prefer setq-local in most files

* lisp/apropos.el (apropos-print):
* lisp/buff-menu.el (Buffer-menu-mode):
* lisp/calc/calc.el (calc-trail-buffer):
* lisp/chistory.el (command-history-mode):
* lisp/dabbrev.el:
* lisp/dframe.el (dframe-frame-mode):
* lisp/doc-view.el (doc-view-presentation-mode):
* lisp/ebuff-menu.el (electric-buffer-menu-mode)
(electric-buffer-update-highlight):
* lisp/edmacro.el (edit-kbd-macro):
* lisp/face-remap.el (buffer-face-set, buffer-face-toggle):
* lisp/files.el:
(find-file-noselect-1, hack-local-variables-confirm)
(set-visited-file-name, revert-buffer--default):
* lisp/filesets.el (filesets-spawn-external-viewer):
* lisp/find-dired.el (find-dired):
* lisp/find-lisp.el (find-lisp-find-dired-internal):
* lisp/finder.el (finder-mode):
* lisp/font-core.el (font-lock-default-function):
* lisp/format.el (format-annotate-function):
* lisp/help-fns.el (describe-variable):
* lisp/help-mode.el (help-mode):
* lisp/icomplete.el (icomplete-minibuffer-setup)
(icomplete--in-region-setup):
* lisp/ido.el (ido-completion-help, ido-tidy):
* lisp/international/robin.el (robin-activate):
* lisp/leim/quail/hangul.el (hangul-input-method-activate):
* lisp/leim/quail/uni-input.el (ucs-input-activate):
* lisp/man.el (Man-mode):
* lisp/master.el (master-set-slave):
* lisp/minibuffer.el (minibuffer-completion-help)
(read-file-name-default):
* lisp/outline.el (outline-minor-mode):
* lisp/pcomplete.el (pcomplete-comint-setup):
* lisp/proced.el (proced-mode):
* lisp/recentf.el (recentf-edit-list, recentf-open-files-items):
* lisp/replace.el (occur-1):
* lisp/reveal.el (reveal-mode):
* lisp/ruler-mode.el (ruler--save-header-line-format):
* lisp/scroll-lock.el (scroll-lock-mode):
* lisp/startup.el (normal-top-level, normal-splash-screen):
* lisp/strokes.el (strokes-list-strokes):
* lisp/thumbs.el (thumbs-insert-image, thumbs-show-thumbs-list):
* lisp/tree-widget.el (tree-widget-set-theme):
* lisp/window.el (read-buffer-to-switch):
* lisp/xwidget.el (xwidget-webkit-begin-edit-textarea): Prefer
setq-local.

lisp/reveal.el

@@ -233,7 +233,7 @@ Also see the `reveal-auto-hide' variable."
   :keymap reveal-mode-map
   (if reveal-mode
       (progn
-	(set (make-local-variable 'search-invisible) t)
+        (setq-local search-invisible t)
 	(add-hook 'post-command-hook 'reveal-post-command nil t))
     (kill-local-variable 'search-invisible)
     (remove-hook 'post-command-hook 'reveal-post-command t)))