master updated (6cc3582 -> e6e5ce3)

[Glenn Morris]

gm pushed a change to branch master.

      from  6cc3582   Correct 'concat' manual entry (bug#42296)
      adds  1279bdb   Another clarification of left/right-fringe display spec
      adds  79f381b   One more improvement of left/right-fringe display spec 
docs
      adds  3a446a0   ; * src/xdisp.c (decode_mode_spec): Fix commentary.
      adds  c892ae6   Repair global-auto-revert-ignore-modes (bug#42271)
      adds  1f52771   Mention floating rounding issues
      adds  136e931   Improve documentation of "C-u C-x ="
      adds  6290850   Consistently stylize eldoc as ElDoc in prose
      adds  c04b921   Add commentary in gtkutil.c
       new  398a268   Merge from origin/emacs-27
      adds  b1ad038   * doc/misc/flymake.texi (An annotated example backend): 
Typo fix.
      adds  bdf716b   Correct 'concat' manual entry (bug#42296)
       new  e6e5ce3   ; Merge from origin/emacs-27


Summary of changes:
 doc/emacs/custom.texi               |  2 +-
 doc/emacs/modes.texi                |  2 +-
 doc/emacs/mule.texi                 |  8 +++++++-
 doc/emacs/programs.texi             |  8 ++++----
 doc/lispref/display.texi            | 12 +++++++++---
 doc/lispref/numbers.texi            |  3 +++
 etc/NEWS.22                         |  2 +-
 etc/NEWS.23                         |  2 +-
 lisp/autorevert.el                  |  2 +-
 lisp/progmodes/python.el            |  8 ++++----
 src/gtkutil.c                       |  7 +++++++
 src/xdisp.c                         |  2 +-
 test/lisp/progmodes/python-tests.el |  2 +-
 13 files changed, 41 insertions(+), 19 deletions(-)