Router: Lengthen shutdown spinner life

router/java/src/net/i2p/router/tasks/Spinner.java

@@ -17,7 +17,7 @@ public class Spinner extends Thread {
     @Override
     public void run() {
         try {
-            sleep(60*1000);
+            sleep(5*60*1000);
         } catch (InterruptedException ie) {}
     }
 }