Merge changes made in Gnus master

Merge changes made in Gnus master

2012-12-25  Lars Ingebrigtsen  <larsi@gnus.org>
* gnus-sum.el (gnus-set-global-variables): Don't copy over the summary
  buffer to the article buffer here, because that clobbers multiple
  article buffers.
* gnus-art.el (gnus-article-setup-buffer): Make sure that the article
  buffer always points to the right summary buffer.

2012-12-25  John Wiegley  <jwiegley@gmail.com>
* auth-source.el (auth-source-netrc-parse): Allow using "password" as
  the password (bug#12097).

2012-12-25  Lars Ingebrigtsen  <larsi@gnus.org>
* shr.el (shr-tag-a): Don't tagify <A> elements that don't have HREFs
  (bug#13263).
* gnus-salt.el (gnus-highlight-selected-tree): Check whether the Tree
  buffer exists before using it (bug#12475).
* gnus-agent.el (gnus-agent-fetch-articles): Don't fetch articles from
  offline groups (bug#11937).
* message.el (message-yank-original): When using customize to set the
  value of `message-cite-style', the variable it set to a symbol that's
  the name of the variable, which must then be dereferenced (bug#12616).

2012-09-13  Wolfgang Jenkner  <wjenkner@inode.at>
* lisp/gnus-spec.el (gnus-face-face-function): Initialize the value of
  the `face' property with a list whose car is the face specified in the
  format string and whose cdr is (nil).
* lisp/gnus-util.el
  (gnus-put-text-property-excluding-characters-with-faces): Change
  accordingly.
  (gnus-get-text-property-excluding-characters-with-faces): New function.
* lisp/gnus-sum.el (gnus-summary-highlight-line):
* lisp/gnus-salt.el (gnus-tree-highlight-node):
* lisp/gnus-group.el (gnus-group-highlight-line): Use it.