* lisp/gnus-vers.el (gnus-revision-number): Increment to 08.
* lisp/gnus-sum.el (gnus-get-newsgroup-headers-xover): Don't use
`gnus-retrieve-parsed-headers' when the backend is nnimap.
(gnus-select-newsgroup): Ditto.
* texi/gnus-ja.texi (New features in Gnus 5.8): Remove annotation about
`gnus-article-display-hook.'
* texi/gnus-faq-ja.texi (Q2.1): Remove mention of `gnus-article-display-hook.'
* lisp/gnus.el (gnus-article-display-hook): Abolished.
* lisp/gnus-uu.el (gnus-uu-grab-articles): Don't care about
`gnus-article-display-hook'.
* lisp/gnus-sum.el (gnus-summary-show-article): Ditto.
(gnus-summary-search-article): Ditto.
* lisp/gnus-bbdb.el (gnus-bbdb-insinuate): Use `gnus-article-prepare-hook'
instead of `gnus-article-display-hook'.
* lisp/gnus-art.el (gnus-article-prepare-display): Evaluate
`gnus-article-prepare-hook' after an article has been prepared;
don't evaluate `gnus-article-display-hook'.