Merge some changes from Emacs/trunk:

Merge some changes from Emacs/trunk:

2004-08-22  Reiner Steib  <Reiner.Steib@gmx.de>

	* gnus-mlspl.el (gnus-group-split-update): Fix docstring.

2004-08-22  Stefan Monnier  <monnier@iro.umontreal.ca>

	* gnus-art.el: Use inhibit-read-only instead of buffer-read-only.
	(gnus-narrow-to-page): Don't assume point-min == 1.
	(gnus-article-edit-mode): Derive from message-mode.

	* gnus-score.el (gnus-score-find-bnews): Simplify and don't assume
	point-min == 1.

	* imap.el (imap-parse-address-list, imap-parse-body-ext):
	Disable incorrect use of `assert'.

	[Emacs/trunk 2004-03-22]

	* message.el (message-mode): Set comment-start-skip.

	[Emacs/trunk 2004-03-04]

2004-08-22  Sam Steingold  <sds@gnu.org>

	* pop3.el (pop3-leave-mail-on-server): New user variable.
	(pop3-movemail): Delete mail only when it is nil.

	[Emacs/trunk 2003-06-11]