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/86box.h

@@ -33,7 +33,7 @@
 #define SCREENSHOT_PATH "screenshots"
 
 /* Recently used images */
-#define MAX_PREV_IMAGES    4
+#define MAX_PREV_IMAGES    10
 #define MAX_IMAGE_PATH_LEN 2048
 
 /* Max UUID Length */