improved CourseAsWaypointList such that it handles temporary duplicates properly

java/com.googlecode.java-diff-utils/src/difflib/Chunk.java

@@ -34,7 +34,7 @@ import java.util.List;
 public class Chunk<T> {
 
     private final int position;
-    private List<T> lines;
+    private final List<T> lines;
     
     /**
      * Creates a chunk and saves a copy of affected lines
@@ -88,10 +88,6 @@ public class Chunk<T> {
         return position;
     }
 
-    public void setLines(List<T> lines) {
-        this.lines = lines;
-    }
-
     /**
      * @return the affected lines
      */