master updated (cf14fa0 -> 15814d0)

[Glenn Morris]

gm pushed a change to branch master.

      from  cf14fa0   * lisp/battery.el: Use lexical-binding.  Drop Redundant 
`:group`s.
      adds  d10be6b   Example goto-addr hook: MH-E already uses goto-address
      adds  db7fa25   Update documentation for mh-show-mode-hook
      adds  d3d2ea9   MH-E: alter content in mh-display-msg, not mh-show-mode
      adds  d07f177   Clarify add-to-list documentation (bug#39373)
      adds  32763da   Replace add-to-list to lexical variable with push 
(bug#39373)
      adds  f27187f   Clarify lexvar restrictions for add-to-ordered-list, 
add-to-history
      adds  8315084   Cater for 3-argument version of pthread_setname_np
      adds  ef5fba9   Fix faces tab-bar and tab-line.
      adds  4a0a114   Support ido-vertical-mode better
      adds  09eed01   Wrap some set-auto-mode calls with delay-mode-hooks 
(bug#39190)
       new  68d4339   Merge from origin/emacs-27
      adds  b2e27d8   Revert "Signal user-error on duplicate package refresh"
       new  15814d0   ; Merge from origin/emacs-27


Summary of changes:
 configure.ac                      | 15 +++++++++++++++
 doc/emacs/misc.texi               |  5 ++---
 doc/lispref/lists.texi            |  9 +++++++--
 doc/lispref/minibuf.texi          |  1 +
 doc/misc/mh-e.texi                |  6 +++---
 etc/NEWS.27                       |  8 ++++++++
 lisp/autoinsert.el                |  2 +-
 lisp/cedet/mode-local.el          | 14 ++++++--------
 lisp/gnus/mm-view.el              |  4 +++-
 lisp/ido.el                       |  3 +++
 lisp/mh-e/mh-e.el                 |  9 +++++----
 lisp/mh-e/mh-show.el              |  8 ++++----
 lisp/net/goto-addr.el             |  8 ++++----
 lisp/net/tramp-cache.el           |  4 ++--
 lisp/net/zeroconf.el              | 12 ++++++------
 lisp/org/org.el                   |  5 +++--
 lisp/subr.el                      |  5 ++++-
 lisp/tab-bar.el                   |  4 ++--
 lisp/tab-line.el                  |  4 ++--
 lisp/vc/diff-mode.el              |  4 +++-
 lisp/vc/vc.el                     |  4 +++-
 lisp/whitespace.el                |  2 +-
 src/systhread.c                   |  8 +++++---
 test/lisp/emacs-lisp/map-tests.el |  2 +-
 24 files changed, 94 insertions(+), 52 deletions(-)