next article at once.
(article-lapsed-string): Refactor out and allow specifying how many
segments you want.
+ (gnus-article-setup-buffer): Start updating the lapsed header directly.
+ (gnus-article-update-lapsed-header): New variable.
* shr.el: Revert change that made headings use different-sized faces.
The Emacs display engine isn't advanced enough that, for instance,