Merge from origin/emacs-28

745a732ae4 ; Further author fixes in authors.el
bef17bca21 * src/dosfns.c (Fint86): Doc fix; don't use obsolete names.
bc55dc04af * doc/misc/erc.texi (Keystroke Summary): Fix doc for TAB.
ef4d216eb3 Remove reference to variable obsolete since 24.1
7282e492d5 * doc/misc/efaq.texi (New in Emacs 28): New node.
eafcccd38f ; FAQ: Normalize references to the NEWS.NN file
c006c490eb ; * doc/misc/efaq.texi (Latest version of Emacs): Update v...
9fbc4fa0e7 Add Tramp version integrated in Emacs 28.1

diff --cc admin/authors.el
Simple merge

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

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

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

diff --cc lisp/net/trampver.el
Simple merge