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/floppy/floppy_img.c

@@ -9,7 +9,7 @@
  *		Implementation of the raw sector-based floppy image format,
  *		as well as the Japanese FDI, CopyQM, and FDF formats.
  *
- * Version:	@(#)floppy_img.c	1.0.6	2017/11/01
+ * Version:	@(#)floppy_img.c	1.0.7	2017/11/04
  *
  * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
  *		Miran Grca, <mgrca8@gmail.com>
@@ -23,7 +23,6 @@
 #include <stdlib.h>
 #include <wchar.h>
 #include "../86box.h"
-#include "../ibm.h"
 #include "../config.h"
 #include "../plat.h"
 #include "floppy.h"