Those changes fix only the bugs having appeared in the bug list.
Many other Gnus changes not yet merged to Emacs are in:
ftp://ftp.jpl.org/pub/tmp/MaGnus-to-Emacs.patch
(or http://www.jpl.org/ftp/pub/tmp/MaGnus-to-Emacs.patch)
2012-06-07 Lars Magne Ingebrigtsen <larsi@gnus.org>
* gnus-msg.el (gnus-msg-mail): Warn the user about Gnus not running
(bug#11514).
2012-04-10 Lars Magne Ingebrigtsen <larsi@gnus.org>
* gnus-msg.el (gnus-summary-cancel-article): See what From header we
would have gotten if we posted to the group, and use that to compare
against the message we want to cancel (bug#10808).