Merge from origin/emacs-27

Merge from origin/emacs-27

45a64c97c7 (origin/emacs-27) Clarify semantics of trace-function CONT...
821760fdc4 Don't let a code literal get modified in mml parsing (Bug#...
74a92be16d * lisp/simple.el (kill-ring-save): Doc fix.  (Bug#40797)
3d0e859692 Minor doc clarification regarding fringe bitmaps
4d86c7f822 Fix documentation of fringe bitmaps
a76af88dd8 Tweak mutability doc a bit more
f7e488d206 Calc: fix autoload errors (bug#40800)
369761b36d ; * src/xdisp.c: Improve the introductory commentary.
a92ca1f177 Improve indexing of ELisp manual
5a25d17760 * lisp/image-mode.el (image-transform-resize): Remove FIXM...
37ebec3a95 Improve the default value of 'doc-view-ghostscript-program'.
ba6104d1e8 Change doc-view-mode-map prefix key 's' to 'c'.
400ff5cd19 Improve wording about constants
d2836fe71b Improve the default value of 'doc-view-ghostscript-program'.
fc55f65305 Minor improvements in documentation of the last change
a64da75961 Add image-auto-resize defcustoms to image-mode.el
692ad40539 Improve the documentation of tab-bar and tab-line

# Conflicts:
#	etc/NEWS