Delete remaining calls to purecopy

Delete remaining calls to purecopy

* lisp/button.el (default-button):
* lisp/calendar/holidays.el (holiday-solar-holidays)
(holiday-bahai-holidays, holiday-islamic-holidays)
(holiday-christian-holidays, holiday-hebrew-holidays)
(holiday-oriental-holidays, holiday-general-holidays):
* lisp/comint.el (comint-file-name-prefix):
* lisp/composite.el (unicode-category-table):
* lisp/cus-face.el (custom-declare-face):
* lisp/custom.el (custom-add-load, custom-add-package-version)
(custom-add-version, custom-add-link, custom-declare-group)
(custom-declare-variable):
* lisp/dired.el (dired-listing-switches):
* lisp/epa-hook.el (epa-file-name-regexp):
* lisp/faces.el (x-font-regexp, x-font-regexp-head)
(x-font-regexp-slant, x-font-regexp-weight, )
(set-face-attribute, set-face-documentation, face-x-resources)
(face-font-registry-alternatives, face-font-family-alternatives)
(term-file-prefix):
* lisp/find-file.el (ff-special-constructs):
* lisp/format.el (format-alist):
* lisp/help.el (help-for-help):
* lisp/image-file.el (image-file-name-extensions):
* lisp/info.el:
* lisp/isearch.el (isearch-help-for-help-internal)
(search-whitespace-regexp):
* lisp/jka-cmpr-hook.el (jka-compr-load-suffixes)
(jka-compr-mode-alist-additions)
(jka-compr-compression-info-list, jka-compr-build-file-regexp):
* lisp/language/ethiopic.el (font-ccl-encoder-alist):
* lisp/language/korea-util.el (default-korean-keyboard):
* lisp/language/tibetan.el (tibetan-precomposition-rule-regexp)
(tibetan-precomposed-regexp):
* lisp/locate.el (locate-ls-subdir-switches):
* lisp/lpr.el (lpr-command):
* lisp/mail/rmail.el (rmail-secondary-file-regexp)
(rmail-secondary-file-directory, rmail-highlighted-headers)
(rmail-ignored-headers, rmail-spool-directory, rmail-file-name):
* lisp/mail/sendmail.el (mail-default-directory)
(mail-signature-file, mail-citation-prefix-regexp)
(mail-personal-alias-file, mail-header-separator):
* lisp/menu-bar.el (yank-menu):
* lisp/net/eudc.el (eudc-tools-menu):
* lisp/newcomment.el (comment-padding, comment-end):
* lisp/obsolete/autoload.el (autoload-generate-file-autoloads):
* lisp/progmodes/hideshow.el (hs-special-modes-alist):
* lisp/ps-print.el (ps-page-dimensions-database):
* lisp/rfn-eshadow.el (file-name-shadow-tty-properties):
* lisp/shell.el (shell-dumb-shell-regexp):
* lisp/simple.el (overwrite-mode-binary, overwrite-mode-textual)
(mark-inactive, shell-command-switch)
(next-error-overlay-arrow-position):
* lisp/subr.el (package--builtin-versions, eval-after-load):
* lisp/tab-bar.el ([tab-bar]):
* lisp/term/pgtk-win.el (x-gtk-stock-map):
* lisp/term/x-win.el (x-gtk-stock-map):
* lisp/tool-bar.el ([tool-bar]):
* lisp/widget.el (define-widget): Remove calls to purecopy.

(cherry picked from commit d6aeb1a2606e1dece860f2b35623245d9eb865c3)