Undo part of previous copyright.el change.

* lisp/emacs-lisp/copyright.el (copyright-update-directory):
Undo part of previous change - don't find files literally, we need
comment-start-skip, etc.

lisp/ChangeLog

@@ -15,7 +15,7 @@
 	Do not mess with the fill-prefix.
 	Do not call copyright-update.
 	(copyright-update-directory): Optionally, fix years rather than update.
-	Skip directories.  Find files literally, with only safe local vars.
+	Skip directories.  Find files with only safe local vars.
 2011-01-25  Stefan Monnier  <monnier@iro.umontreal.ca>

lisp/emacs-lisp/copyright.el

@@ -363,7 +363,7 @@ If FIX is non-nil, run `copyright-fix-years' instead."
   (dolist (file (directory-files directory t match nil))
     (unless (file-directory-p file)
       (message "Updating file `%s'" file)
-      (find-file-literally file)
+      (find-file file)
       (let ((inhibit-read-only t)
 	    (enable-local-variables :safe)
 	    copyright-query)