373272: maintain the start order of aggregate beans when adding a thread pool

jetty-server/src/main/java/org/eclipse/jetty/server/nio/SelectChannelConnector.java

@@ -80,6 +80,15 @@ public class SelectChannelConnector extends AbstractNIOConnector
         setAcceptors(Math.max(1,(Runtime.getRuntime().availableProcessors()+3)/4));
     }
     
+    @Override
+    public void setThreadPool(ThreadPool pool)
+    {
+        super.setThreadPool(pool);
+        // preserve start order
+        removeBean(_manager);
+        addBean(_manager,true);
+    }
+    
     /* ------------------------------------------------------------ */
     @Override
     public void accept(int acceptorID) throws IOException

jetty-util/src/main/java/org/eclipse/jetty/util/component/AggregateLifeCycle.java

@@ -39,6 +39,11 @@ public class AggregateLifeCycle extends AbstractLifeCycle implements Destroyable
         }
         final Object _bean;
         volatile boolean _managed=true;
+        
+        public String toString()
+        {
+            return "{"+_bean+","+_managed+"}";
+        }
     }
 
     /* ------------------------------------------------------------ */