Merge changes made in Gnus trunk.

Merge changes made in Gnus trunk.

2012-01-04  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 * gnus.texi (Group Parameters): Note precedence.
2012-01-04  Chris Gray  <chrismgray@gmail.com>  (tiny change)
 * mm-decode.el (mm-shr): Check that `gnus-summary-buffer' really is a
 live buffer.
2012-01-04  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 * nnir.el (nnir-retrieve-headers): Protect against the article not
 existing on the server (bug#10335).
2012-01-04  Wolfgang Jenkner  <wjenkner@inode.at>  (tiny change)
 * gnus-agent.el (gnus-agent-load-local): Recompute
 gnus-agent-article-local on changing method.
2012-01-04  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 * gnus.el (gnus-parameters): Note precedence.
2012-01-04  Leo  <sdl.web@gmail.com>
 * nndraft.el (nndraft-update-unread-articles): Don't move point around
 in the group buffer.