CD-ROM images are now working correctly again;

Fixed all the reported bugs regarding the Settings dialog;
MIDI out device is now no longer reset to 0 after hard reset;
Removed all vestiges of the old disk activity flash;
The configuration file is no longer saved when it shouldn't be;
Redone the status bar icon updating so it is only done in win.c;
Made sure all variables in ibm.h are extern;
A lot of other bugfixes;
Added Mouse Systems Mouse emulation (patch from TheCollector1995);
Added IBM PS/1 Model 2133 (486) emulation (patch from TheCollector1995);
Tweaked the CPU dynamic recompiler cycle periods - 486SX 33 and 486DX 33 now work;
Increased compatibility with configuration files from before the previous commit.

src/fdc.c

@@ -130,6 +130,8 @@ typedef struct FDC
 	uint16_t base_address;
 } FDC;
 
+int disctime;
+
 static FDC fdc;
 
 void fdc_callback();
@@ -958,7 +960,6 @@ bad_command:
 					}
 					disctime = 0;
 					update_status_bar_icon(SB_FLOPPY | fdc.drive, 1);
-					readflash = 1;
 					fdc.inread = 1;
                                         break;