Merge from origin/emacs-28

Merge from origin/emacs-28

d53c999b4a Further vcs-cvs/rcs-responsible-p updates from master
dc3d1628ec ; * src/sysdep.c: Fix mistake in previous commit
855e15dbf1 Fix builds on older versions of macOS
9da744e450 Fix documentation of Outline minor mode options
a8bb12ab05 Improve discoverability of 'insert-directory-program'
3f166bdf44 ; * etc/PROBLEMS: Describe MS-Windows issues with fonts.  ...
803ac857ee Fix cursor motion under truncate-lines with Flymake fringe...

# Conflicts:
#	etc/PROBLEMS
#	lisp/outline.el
#	src/sysdep.c