Use curved quotes in core elisp diagnostics

Use curved quotes in core elisp diagnostics

In the core elisp files, use curved quotes in diagnostic formats,
so that they follow user preference as per ‘text-quoting-style’
rather than being hard-coded to quote `like this'.
* lisp/abbrev.el (expand-region-abbrevs):
* lisp/button.el (button-category-symbol, button-put)
(make-text-button):
* lisp/cus-start.el:
* lisp/custom.el (custom-add-dependencies, custom-check-theme)
(custom--sort-vars-1, load-theme):
* lisp/emacs-lisp/byte-run.el (defun, defsubst):
* lisp/emacs-lisp/cl-generic.el (cl-defgeneric)
(cl-generic-generalizers):
* lisp/emacs-lisp/macroexp.el (macroexp--obsolete-warning):
* lisp/emacs-lisp/map-ynp.el (map-y-or-n-p):
* lisp/emacs-lisp/nadvice.el (advice--make-docstring)
(advice--make, define-advice):
* lisp/emacs-lisp/tabulated-list.el (tabulated-list-put-tag):
* lisp/emacs-lisp/timer.el (timer-event-handler):
* lisp/env.el (setenv):
* lisp/facemenu.el (facemenu-add-new-face)
(facemenu-add-new-color):
* lisp/faces.el (face-documentation, read-face-name)
(face-read-string, read-face-font, face-spec-set-match-display)
(read-color, x-resolve-font-name):
* lisp/files.el (locate-user-emacs-file, find-alternate-file)
(set-auto-mode, hack-local-variables)
(hack-one-local-variable--obsolete)
(dir-locals-set-directory-class, write-file)
(basic-save-buffer, delete-directory, copy-directory)
(recover-session, recover-session-finish, insert-directory)
(file-modes-char-to-who, file-modes-symbolic-to-number)
(move-file-to-trash):
* lisp/font-lock.el (font-lock-fontify-buffer):
* lisp/format.el (format-write-file, format-find-file)
(format-insert-file):
* lisp/frame.el (get-device-terminal, select-frame-by-name):
* lisp/fringe.el (fringe--check-style):
* lisp/help.el (describe-minor-mode-from-indicator):
* lisp/image.el (image-type):
* lisp/international/fontset.el (x-must-resolve-font-name):
* lisp/international/mule-cmds.el (prefer-coding-system)
(select-safe-coding-system-interactively)
(select-safe-coding-system, activate-input-method)
(toggle-input-method, describe-current-input-method):
* lisp/international/mule-conf.el (code-offset):
* lisp/mouse.el (minor-mode-menu-from-indicator):
* lisp/replace.el (query-replace-read-from)
(occur-after-change-function, occur-1):
* lisp/scroll-bar.el (scroll-bar-columns):
* lisp/simple.el (execute-extended-command)
(undo-outer-limit-truncate, compose-mail, set-variable)
(choose-completion-string, define-alternatives):
* lisp/startup.el (site-run-file, tty-handle-args, )
(command-line, command-line-1):
* lisp/subr.el (noreturn, define-error, add-to-list)
(read-char-choice):
* lisp/term/common-win.el (x-handle-xrm-switch)
(x-handle-name-switch, x-handle-args):
* lisp/term/x-win.el (x-handle-parent-id, x-handle-smid):
Use curved quotes in diagnostics.
* lisp/international/mule.el (find-auto-coding):
Use " to quote in a diagnostic, to be consistent with the rest of
this file.