Auto-switch DiskII firmware to 13 or 16 sector depending on disk in drive-1 (#734) (PR #761)

. The auto-switch is done on each reset, or on inserting a disk at the start-up screen (MODE_LOGO).
. The Window's title include '(S6-13)' if DiskII card has 13-sector f/w.
. The debugger's 'disk info' cmd will show FW13 or FW16 depending on f/w.

source/DiskImage.cpp

@@ -246,6 +246,11 @@ BYTE ImageGetOptimalBitTiming(ImageInfo* const pImageInfo)
 	return pImageInfo ? pImageInfo->optimalBitTiming : 32;
 }
 
+bool ImageIsBootSectorFormatSector13(ImageInfo* const pImageInfo)
+{
+	return pImageInfo ? pImageInfo->bootSectorFormat == CWOZHelper::bootSector13 : false;
+}
+
 UINT ImagePhaseToTrack(ImageInfo* const pImageInfo, const float phase, const bool limit/*=true*/)
 {
 	if (!pImageInfo)