Include the Runnable's toString in the toString of Intervals created by PresentsDObjectMgr

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5883 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/server/PresentsDObjectMgr.java

@@ -280,6 +280,7 @@ public class PresentsDObjectMgr
     public Interval newInterval (final Runnable action)
     {
         return new Interval() {
+            @Override
             public void expired () {
                 if (isRunning()) {
                     postRunnable(new Runnable() {
@@ -296,6 +297,11 @@ public class PresentsDObjectMgr
                     cancel();
                 }
             }
+
+            @Override
+            public String toString() {
+                return "DObjectManagerInterval(" + action + ")";
+            }
         };
     }