master updated (2d9d62b -> 5715eb9)

[Glenn Morris]

gm pushed a change to branch master.

      from  2d9d62b   Add new Tramp method "media"
      adds  2eb834e   Clear output data pointer on NS
      adds  06166aa   Improve explanation of available font backends under X
      adds  7dd065f   Small fixes in documentation.
      adds  3ba0db4   Allow optional truncation of tab names in tab-bar and 
tab-line (bug#38693)
       new  83d4934   Merge from origin/emacs-27
      adds  f2f9f2f   * lisp/menu-bar.el: Remove desktop-save-mode from release 
branch (bug#37594)
       new  a1bfb92   ; Merge from origin/emacs-27
      adds  5abd8d7   Improve display of temporary echo messages
      adds  4aec94d   Avoid leaving artifacts when the system caret is used on 
w32
      adds  7e37e61   Correct statement about ftcr and recommend HarfBuzz
      adds  ac09e8e   * lisp/vc/smerge-mode.el (smerge-match-conflict): Fix 
bug#38456
      adds  d5d90dc   * doc/misc/tramp.texi (Bug Reports): Encourage use of 
"emacs -Q".
      adds  3b0938c   Render Ido suggestions using an overlay
       new  5715eb9   Merge from origin/emacs-27


Summary of changes:
 doc/emacs/dired.texi    |  4 +--
 doc/emacs/fixit.texi    |  6 ++--
 doc/lispref/frames.texi | 31 +++++++++++----------
 doc/misc/tramp.texi     |  6 +++-
 lisp/ido.el             | 10 ++++++-
 lisp/minibuffer.el      | 10 +++++--
 lisp/tab-bar.el         | 25 +++++++++++++++++
 lisp/tab-line.el        | 73 +++++++++++++++++++++++--------------------------
 lisp/vc/smerge-mode.el  |  5 +++-
 src/dispnew.c           | 13 +++++++--
 src/nsterm.m            |  1 +
 src/w32term.c           |  6 ++--
 src/xdisp.c             | 17 ++++++++++++
 13 files changed, 139 insertions(+), 68 deletions(-)