Note that this file is already in sync with wine-8.20
NOWINMESSAGES, NOWINSTYLES, NOCLIPBOARD, NOMENUS, NOSYSCOMMANDS,
OEMRESOURCE and NOICONS #ifndef guards should not be present in the
.rh file, contrary to the .h file.
However, #ifndef NONCMESSAGES guard should be present.
Finally, remove the useless SC_SIZE redefinition
("At least HP-UX defines it in /usr/include/sys/signal.h" -- like,
what the hell, we are developing ReactOS...)
