master updated (74ff6acdd3 -> bf47851e08)

[Robert Pluim]

rpluim pushed a change to branch master.

      from  74ff6acdd3 url-about: Ignore missing directories in load-path
       new  e5e840168c Remove duplicate key definitions from keymaps
       new  bf47851e08 Signal error on duplicate key definitions


Summary of changes:
 doc/lispref/keymaps.texi |  6 ++++--
 etc/NEWS                 |  6 ++++++
 lisp/gnus/gnus-srvr.el   |  1 -
 lisp/gnus/gnus-sum.el    |  2 --
 lisp/ibuffer.el          |  1 -
 lisp/keymap.el           | 16 +++++++++++++++-
 lisp/wdired.el           |  1 -
 test/src/keymap-tests.el | 12 ++++++++++++
 8 files changed, 37 insertions(+), 8 deletions(-)