winnt.h should not be self-contained, it must depend on windef.h so
that STRICT works correctly; moved some definitions back to windef.h
where they belong, and removed a couple of definitions that don't
exist on Windows.

diff --git a/include/miscemu.h b/include/miscemu.h
index 311163d..ce3abc3 100644
--- a/include/miscemu.h
+++ b/include/miscemu.h
@@ -21,7 +21,7 @@
 #ifndef __WINE_MISCEMU_H
 #define __WINE_MISCEMU_H
 
-#include "winnt.h"
+#include "windef.h"
 #include "selectors.h"
 #include "wine/windef16.h"