unb0rk akka-actor-nightly build

This means tightening types from Duration to FiniteDuration in several
places; a good thing, since we replace runtime complaints by compile
time errors.

akka-docs/java/code/docs/jrouting/ParentActor.java

@@ -53,8 +53,8 @@ public class ParentActor extends UntypedActor {
       //#scatterGatherFirstCompletedRouter
       ActorRef scatterGatherFirstCompletedRouter = getContext().actorOf(
           new Props(FibonacciActor.class).withRouter(new ScatterGatherFirstCompletedRouter(5, Duration
-              .parse("2 seconds"))), "router");
-      Timeout timeout = new Timeout(Duration.parse("5 seconds"));
+              .create(2, "seconds"))), "router");
+      Timeout timeout = new Timeout(Duration.create(5, "seconds"));
       Future<Object> futureResult = akka.pattern.Patterns.ask(scatterGatherFirstCompletedRouter,
           new FibonacciActor.FibonacciNumber(10), timeout);
       int result = (Integer) Await.result(futureResult, timeout.duration());