Prefer defvar-local in preloaded files

Prefer defvar-local in preloaded files

* lisp/abbrev.el:
* lisp/bindings.el (mode-line-mule-info, mode-line-modified)
(mode-line-remote, mode-line-process)
(mode-line-buffer-identification):
* lisp/buff-menu.el (Buffer-menu-files-only):
* lisp/files.el (buffer-file-number, buffer-file-read-only)
(local-write-file-hooks, write-contents-functions)
(file-local-variables-alist, dir-local-variables-alist)
(save-buffer-coding-system, buffer-save-without-query):
* lisp/font-core.el (font-lock-defaults):
* lisp/font-lock.el (font-lock-keywords-case-fold-search)
(font-lock-syntactically-fontified)
(font-lock-extend-after-change-region-function)
(font-lock-extend-region-functions, font-lock-major-mode):
* lisp/menu-bar.el (list-buffers-directory):
* lisp/simple.el (next-error--message-highlight-overlay)
(next-error-buffer, next-error-function)
(next-error-move-function, goto-line-history)
(minibuffer-default-add-done, undo-extra-outer-limit):
* lisp/tab-bar.el (tab-switcher-column):
* lisp/term/ns-win.el (ns-select-overlay):
* lisp/window.el (window-size-fixed, window-area-factor)
(window-group-start-function, window-group-end-function)
(set-window-group-start-function)
(recenter-window-group-function)
(pos-visible-in-window-group-p-function)
(selected-window-group-function)
(move-to-window-group-line-function): Prefer defvar-local.