Merge from origin/emacs-27

Merge from origin/emacs-27

cd93debc60 (origin/emacs-27) Merge branch 'emacs-27' of git.savannah....
2c0c613ec5 Document prefix arg effects for 'epa-mail-{sign,encrypt}'
551123e0b2 * etc/NEWS: Correct description of :client-certificate change
05c4329cf5 Revert "Fix filename completion in shell mode buffers"
de68572742 Improve documentation of 'bookmark-bmenu-mode'
fd85e70be7 Update systems using GnuTLS certificate files
0d4ba1c2b2 Improve documentation of 'kill-emacs'
b3bbd4fd00 Improve documentation of 'display-raw-bytes-as-hex'
f50d79af6b Correct descriptions of init file
e325d2638c Fix interrupt-process on MS-Windows
d24e56a5e4 Revert "* doc/misc/flymake.texi (An annotated example back...

# Conflicts:
#	etc/NEWS