* lisp/gnus/gnus-art.el (gnus-article-next-page): Revert.
(gnus-article-beginning-of-window): New macro.
(gnus-article-next-page-1): Use it.
(gnus-article-prev-page): Ditto.
(gnus-mime-save-part-and-strip): Use insert-buffer-substring
instead of insert-buffer.
(gnus-mime-delete-part): Ditto.
(gnus-article-edit-exit): Ditto.
* lisp/gnus/pgg.el (pgg-insert-url-with-w3): Don't load w3, it is possible
to have the url package without w3. Reported by Daiki Ueno
<ueno@unixuser.org> and Luigi Panzeri <matley@muppetslab.org>.