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/machine/m_common.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <wchar.h>
+#include "../86box.h"
+#include "../dma.h"
+#include "../pic.h"
+#include "../pit.h"
+#include "../lpt.h"
+#include "../serial.h"
+#include "../floppy/floppy.h"
+#include "../floppy/fdd.h"
+#include "../floppy/fdc.h"
+#include "machine.h"
+
+
+void
+machine_common_init(machine_t *model)
+{
+    /* System devices first. */
+    dma_init();
+    pic_init();
+    pit_init();
+
+    if (lpt_enabled)
+	lpt_init();
+
+    if (serial_enabled[0])
+	serial_setup(1, SERIAL1_ADDR, SERIAL1_IRQ);
+
+    if (serial_enabled[1])
+	serial_setup(2, SERIAL2_ADDR, SERIAL2_IRQ);
+
+    fdc_add();
+}