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/disk/hdc_esdi_mca.c

@@ -52,7 +52,7 @@
  *		however, are auto-configured by the system software as
  *		shown above.
  *
- * Version:	@(#)hdc_esdi_mca.c	1.0.7	2017/10/16
+ * Version:	@(#)hdc_esdi_mca.c	1.0.8	2017/11/04
  *
  * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
  *		Fred N. van Kempen, <decwiz@yahoo.com>
@@ -66,7 +66,6 @@
 #include <stdlib.h>
 #include <wchar.h>
 #include "../86box.h"
-#include "../ibm.h"
 #include "../device.h"
 #include "../dma.h"
 #include "../io.h"