Hi,

I compared .el files and .texi files between the Gnus trunk and
the Emacs trunk and found two .el files in Gnus are older than
the ones in Emacs.  The changes concerning them are:

2009-04-20  Stefan Monnier  <monnier@iro.umontreal.ca>

	* rfc2047.el (rfc2047-decode-region): Don't skip past `start', which
	could happen if the text is only composed of spaces and/or tabs.

2006-08-10  Romain Francoise  <romain@orebokech.com>

	* textmodes/dns-mode.el: Alias `zone-mode' to `dns-mode'.
	(dns-mode-soa-auto-increment-serial): New user option.
	(dns-mode-soa-maybe-increment-serial): New function.
	(dns-mode): Add the latter to `write-contents-functions'.

I think those changes in Emacs should be merged to No Gnus.

In addition, for the customization group for the user option
`dns-mode', `data' used in Emacs looks better than `comm' used
in Gnus.

(Emacs)
2005-05-27  Lute Kamstra  <lute@gnu.org>
[...]
	* textmodes/dns-mode.el (dns-mode):
[...]
	Specify customization group.

(No Gnus)
2005-05-17  Katsumi Yamaoka  <yamaoka@jpl.org>
[...]
	* dns-mode.el (dns-mode): Add :group.

So, it is enough to copy those two files from Emacs to No Gnus.
The diffs are as follows: