Merge from origin/emacs-28

8a0734329a Avoid undefined behavior in 'send-process-region' (Bug#523...
30dd5c9acc Update to Org 9.5.1-25-g9ca3bc
a374849926 Fix the DJGPP port

diff --cc lisp/loadup.el
Simple merge

diff --cc msdos/sed2v2.inp
Simple merge

diff --cc src/callproc.c
Simple merge

diff --cc src/fileio.c
Simple merge

diff --cc src/msdos.c
Simple merge

diff --cc src/process.c
Simple merge