Major commit, cleaning a lot of old stuff.

IBM.H is gone, video stuff re-organized. Keyboard stuff reorganized.
Machines that have their own video, mouse and/or keyboard now have all this in their machine file.
Fixed and other cleanups here and there.

src/sio_um8669f.c

@@ -26,8 +26,8 @@ PnP registers :
 #include <string.h>
 #include <wchar.h>
 #include "86box.h"
-#include "ibm.h"
 #include "io.h"
+#include "pci.h"
 #include "lpt.h"
 #include "serial.h"
 #include "floppy/floppy.h"