jetty-9: HTTP client: named the scheduler for better debugging.

jetty-client/src/main/java/org/eclipse/jetty/client/HttpClient.java

@@ -158,7 +158,7 @@ public class HttpClient extends ContainerLifeCycle
         addBean(byteBufferPool);
 
         if (scheduler == null)
-            scheduler = new TimerScheduler();
+            scheduler = new TimerScheduler(HttpClient.class.getSimpleName() + "@" + hashCode() + "-Scheduler");
         addBean(scheduler);
 
         selectorManager = newSelectorManager();