Fixed some CD-ROM commands not stopping audio play when they should have (fixes data playing as audio, producing nasty artifacts, in some games), and increased the media history for all drive types from 4 to 10, also refactored cdrom_read_sector() and moved the last module-wide variables into the cdrom_t struct.

src/include/86box/mo.h

@@ -27,7 +27,7 @@
 
 #define MO_TIME  10.0
 
-#define MO_IMAGE_HISTORY 4
+#define MO_IMAGE_HISTORY 10
 
 typedef struct mo_type_t {
     uint32_t sectors;