emacs-28 updated (77dbaed -> 81e3697)

[Juri Linkov]

jurta pushed a change to branch emacs-28.

      from  77dbaed   Add tab bar support to the nextstep port
       new  a191d3c   Add new and fix existing docstrings in tab-bar.el and 
tab-line.el (bug#51247)
       new  81e3697   * lisp/tab-bar.el: Add a new tab on [mouse-1] instead of 
[down-mouse-1]


Summary of changes:
 lisp/tab-bar.el  | 74 ++++++++++++++++++++++++++++++++++++--------------------
 lisp/tab-line.el |  4 +--
 2 files changed, 50 insertions(+), 28 deletions(-)