emacs-28 updated (ed9f554 -> 77dbaed)

[Alan Third]

athird pushed a change to branch emacs-28.

      from  ed9f554   Improve doc strings in tab-line.el
       new  7b6fb486  Fix potential buffer overflow (bug#50767)
       new  77dbaed   Add tab bar support to the nextstep port


Summary of changes:
 src/image.c  | 23 +++++++++++++---------
 src/nsfns.m  | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 src/nsterm.h |  1 +
 src/nsterm.m | 42 +++++++++++++++++++++++++++++-----------
 4 files changed, 107 insertions(+), 22 deletions(-)