Merge from origin/emacs-27

5280e118c0 (origin/emacs-27) ; * src/xdisp.c (pos_visible_p): Fix las...
bb1a9481c9 Fix posn-at-point at beginning of a display string
0c4b033670 Improve documentation of Info node movement commands
632b0119e1 Add Jansson dependency to Windows Build
dbfcdab837 Unbreak 'reverse-region'
c37de84845 Fix typos and markup in fill column indicator docs
f61bff3ee9 ; * CONTRIBUTE: Clarify the preferences for patch formatting.
368e140660 Avoid crashes in 'defconst'
11e3413cff Fix text about Lisp archives in the Emacs FQ
4c81724675 Don't use 'cl' functions in ELisp manual's examples

diff --cc admin/nt/dist-build/build-dep-zips.py
Simple merge

diff --cc doc/emacs/display.texi
Simple merge

diff --cc doc/misc/efaq.texi
Simple merge

diff --cc lisp/info.el
Simple merge

diff --cc src/eval.c
Simple merge

diff --cc src/xdisp.c
Simple merge