Merge from origin/emacs-26

Merge from origin/emacs-26

ca3f0a8 ; * etc/NEWS: Belated announcement of 2 changes made in Emacs...
99f92da Improve documentation of 'directory-files-and-attributes'
df8649a * lisp/gnus/message.el (message-remove-header): Don't remove ...
b682a7e ; * etc/NEWS: Add headings for Emacs 26.2
aa175a4 Adapt hexl-mode to native line-number display
b8e7749 Fix example in Tramp manual
f212fe5 Handle case where Xft is found but not XRender
186280f * doc/misc/tramp.texi (Frequently Asked Questions): Adapt zsh...
24ba633 Improve read-multiple-choice docstring (Bug#31628)

Conflicts:
	etc/NEWS
	src/dired.c