- no more separate cd booting stuff (handled in FS now)

- scan_keyboard() asm function that reads char from keyboard
   controller in case one is in there to avoid stuckness when
   returning from minix

boot/boot.h

@@ -103,6 +103,8 @@ int writesectors(u32_t bufaddr, u32_t sector, U8_t count);
 			/* Write 1 or more sectors to "device". */
 int getch(void);
 			/* Read a keypress. */
+void scan_keyboard(void);	
+			/* Read keypress directly from kb controller. */
 void ungetch(int c);
 			/* Undo a keypress. */
 int escape(void);