persistent file history

[Markus Rost]

   I have the following entry in my `recentf-mode-hook':

      (lambda ()
        (dolist (f (reverse recentf-list))
          (add-to-list 'file-name-history f)))

I like this very much.  What about using abbreviate-file-name in that
function?  I mean here something like:

 (lambda nil
   (dolist
       (f
        (reverse recentf-list))
     (add-to-list 'file-name-history
                  (abbreviate-file-name f)))))

Since we are about values of history variables:  What about setting
the default value of yes-or-no-p-history as follows:

(setq yes-or-no-p-history (list "yes" "no"))