When faced with a 140k image, let the file suffix .do, .po, .2mg take precedence before we go sniffing for a filesystem.

src/com/webcodepro/applecommander/storage/Disk.java

@@ -262,6 +262,21 @@ public class Disk {
 						rc = 0;
 					}
 				}
+				if (rc == -1) {
+					/*
+				 	* Check filenames for something deterministic.
+				 	*/
+					if (isProdosOrder() || is2ImgOrder()) {
+						imageOrder = proDosOrder;
+						rc = 0;
+					} else if (isDosOrder()) {
+						imageOrder = dosOrder;
+						rc = 0;
+					} else if (isNibbleOrder()) {
+						imageOrder = new NibbleOrder(diskImageManager);
+						rc = 0;
+					}
+				}
 				if (rc == -1) {
 					/*
 					 * Ok, it's not one of those. Now, let's go back to DOS