master updated (e959107 -> 9853355)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  e959107   * lisp/mouse-drag.el: Use lexical-binding.
       new  97f8ab3   Remove some references to Emacs 21
       new  9853355   Remove some items obsolete since Emacs 22/23 from Gnus


Summary of changes:
 doc/misc/gnus.texi      |  6 ++----
 etc/NEWS                | 18 ++++++++++++------
 lisp/erc/erc-track.el   |  2 --
 lisp/erc/erc.el         |  1 -
 lisp/gnus/gnus-art.el   | 21 +--------------------
 lisp/gnus/gnus-msg.el   |  7 +------
 lisp/gnus/gnus-start.el |  1 -
 lisp/gnus/gnus.el       |  4 ++--
 lisp/gnus/nnimap.el     |  2 +-
 lisp/gnus/nnmail.el     |  8 --------
 lisp/gnus/nntp.el       |  2 +-
 lisp/ibuffer.el         |  2 +-
 lisp/ruler-mode.el      |  2 +-
 13 files changed, 22 insertions(+), 54 deletions(-)