Variables starting with `d' in src/od-macos

• dirID src/od-macos/mac.c:861
• driveDf0Rect src/od-macos/macgui.c:42
• driveDf1Rect src/od-macos/macgui.c:42
• driveDf2Rect src/od-macos/macgui.c:42
• driveDf3Rect src/od-macos/macgui.c:42
• dummyPort src/od-macos/mac.c:74