Merge from origin/emacs-27

Merge from origin/emacs-27

362ca83a3b (origin/emacs-27) Let Emacs start even if curdir is inacce...
dd989c0ea0 * etc/NEWS: Mention GnuPG 2.0 through 2.1.5 issue (Bug#428...
4542b750cc Fix bug with ~/Emacs file not being read at init
9b403d624e ; Fix last change
6bff65a626 ; * doc/lispref/sequences.texi (Sequence Functions): Typo ...
3c4edfd85e Prevent from frozen frame after `C-z' in Lucid builds
98e8241992 Document the 'flex' completion style
19fa8b7ca3 Note that Emacs needs systemd support if systemd is used t...

# Conflicts:
#	etc/NEWS