master updated (099520e -> 6bdb561)

[Glenn Morris]

gm pushed a change to branch master.

      from  099520e   Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs
      adds  a695189   ; * etc/NEWS: Fix typo.
      adds  0883c80   Simplify rx example in manual
      adds  4537976   Port .gdbinit to clang with -gdwarf-4
      adds  1bc3fa0   * lisp/emacs-lisp/package.el (package-install): Fix typo 
in docstring.
      adds  ef5744a   Improve docs for horizontal scrolling with mouse and 
touchpad (Bug#39979)
      adds  c1ce9fa   * lisp/subr.el (cancel-change-group): Fix bug#39680
      adds  ecfe633   * lisp/tab-bar.el: Last-minute changes.
      adds  1ab766f   Fix last change
      adds  b468b3d   Fix a recent documentation change
      adds  a2b07f9   ; * etc/NEWS: Explain how to get back old behavior with 
--eval.
       new  6bdb561   Merge from origin/emacs-27


Summary of changes:
 doc/emacs/frames.texi      | 13 +++++++++----
 doc/lispref/searching.texi |  4 ++--
 etc/NEWS.27                | 10 +++++++++-
 lisp/emacs-lisp/package.el |  2 +-
 lisp/mwheel.el             | 10 ++++++++--
 lisp/subr.el               |  9 +++++++--
 lisp/tab-bar.el            | 26 ++++++++++++++++++++------
 src/.gdbinit               |  2 +-
 8 files changed, 57 insertions(+), 19 deletions(-)