master updated (80f04b5 -> 477b9ea)

[Glenn Morris]

gm pushed a change to branch master.

      from  80f04b5   * lisp/cdl.el: Use lexical binding.
      adds  067b070   ; Fix some typos and doc issues (bug#40695)
      adds  52288f4   Mention 'spam-stat-process-directory-age' in the 
documentation
      adds  6c187ed   Improve documentation of 'sort-lines'
      adds  eebfb72   Document constant vs mutable objects better
      adds  5e9db48   * doc/lispref/display.texi (Customizing Bitmaps): Fix 
typo.
      adds  d7d5ee6   ; Fix a typo in cmdargs.texi (bug#40701)
      adds  4df8a61   Add new node "Image Mode" to Emacs Manual.
      adds  d5ec18c   * src/regex-emacs.c (re_match_2_internal): Rework comment 
in last change
      adds  14a570a   Remove #' and function quoting from lambda forms in manual
      adds  5734339   * doc/lispref/keymaps.texi (Extended Menu Items, Easy 
Menu) <:key-sequence>:
      adds  81e7d7f   Document that quoting yields constants
      adds  dca35b3   Improve mutability documentation
      adds  5805df7   Improve mutability doc
      adds  e1d42da   Fix mutability glitches reported by Drew Adams
      adds  9261a21   * doc/emacs/windows.texi (Window Convenience): Decribe 
more windmove features.
      adds  751510f   * lisp/image-mode.el: Add prefix key 's' and reduce 
dependency on ImageMagick.
      adds  a104086   Tweak setcar-related wording
      adds  05089a4   Tweak wording re constant variables
       new  477b9ea   Merge from origin/emacs-27


Summary of changes:
 ChangeLog.3                         | 16 ++++----
 admin/notes/bug-triage              |  2 +-
 doc/emacs/cmdargs.texi              |  2 +-
 doc/emacs/dired.texi                |  3 +-
 doc/emacs/emacs.texi                |  3 +-
 doc/emacs/files.texi                |  9 +++--
 doc/emacs/fixit.texi                | 30 +++++++--------
 doc/emacs/frames.texi               |  5 ++-
 doc/emacs/misc.texi                 |  2 +-
 doc/emacs/windows.texi              | 20 ++++++++--
 doc/lispintro/emacs-lisp-intro.texi | 32 ++++++++++------
 doc/lispref/abbrevs.texi            |  6 +--
 doc/lispref/backups.texi            |  2 +-
 doc/lispref/display.texi            |  6 +--
 doc/lispref/edebug.texi             |  2 +-
 doc/lispref/elisp.texi              |  1 +
 doc/lispref/eval.texi               | 15 +++++++-
 doc/lispref/functions.texi          |  4 +-
 doc/lispref/help.texi               | 56 +++++++++++++--------------
 doc/lispref/keymaps.texi            | 33 ++++++++--------
 doc/lispref/lists.texi              | 68 ++++++++++++++++++---------------
 doc/lispref/objects.texi            | 48 +++++++++++++++++++++++
 doc/lispref/os.texi                 |  2 +-
 doc/lispref/sequences.texi          | 51 +++++++++++++++----------
 doc/lispref/strings.texi            | 18 ++++++---
 doc/lispref/syntax.texi             |  6 +--
 doc/lispref/text.texi               | 13 +++----
 doc/misc/gnus.texi                  |  7 ++++
 etc/NEWS.27                         | 66 +++++++++++++++++---------------
 lib/ieee754.in.h                    |  4 +-
 lisp/emacs-lisp/bytecomp.el         |  2 +-
 lisp/emacs-lisp/checkdoc.el         |  2 +-
 lisp/emacs-lisp/cl-macs.el          |  8 ++--
 lisp/emacs-lisp/elp.el              |  2 +-
 lisp/emacs-lisp/generator.el        | 32 +++++++---------
 lisp/emacs-lisp/gv.el               |  2 +-
 lisp/emacs-lisp/lisp-mode.el        |  2 +-
 lisp/image-mode.el                  | 76 ++++++++++++++++++-------------------
 lisp/image/exif.el                  |  4 +-
 lisp/international/mule-util.el     |  2 +-
 lisp/json.el                        |  2 +-
 lisp/minibuffer.el                  |  4 +-
 lisp/obsolete/cl.el                 |  2 +-
 lisp/sort.el                        |  3 +-
 lisp/startup.el                     |  8 ++--
 lisp/subr.el                        |  6 +--
 lisp/textmodes/ispell.el            | 10 ++---
 src/eval.c                          |  2 +-
 src/lread.c                         |  2 +-
 src/regex-emacs.c                   |  8 ++--
 src/syntax.c                        |  4 +-
 test/lisp/jsonrpc-tests.el          |  4 +-
 test/src/thread-tests.el            |  2 +-
 53 files changed, 420 insertions(+), 301 deletions(-)