emacs-27 updated (561e9fb -> 8944310)

[Noam Postavsky]

npostavs pushed a change to branch emacs-27.

      from  561e9fb   Improve documentation of project.el commands
       new  9ab85f0   Fix cl-concatenate (Bug#40180)
       new  8709aad   Fix a couple of problems in changelog generating functions
       new  8944310   Don't signal during backtrace unrewind (Bug#40088)


Summary of changes:
 lisp/emacs-lisp/cl-extra.el            |  2 +-
 lisp/vc/diff-mode.el                   | 49 ++++++++++++++++++----------------
 lisp/vc/log-edit.el                    | 26 +++++++++---------
 src/data.c                             |  2 +-
 src/eval.c                             |  4 +--
 src/lisp.h                             |  1 +
 test/lisp/emacs-lisp/cl-extra-tests.el |  8 ++++++
 7 files changed, 53 insertions(+), 39 deletions(-)