Propagate statusPromise down to the actual change in throttler, see #2877

* added some missing copyright headers

akka-remote/src/main/scala/akka/remote/Remoting.scala

@@ -1,3 +1,6 @@
+/**
+ * Copyright (C) 2009-2012 Typesafe Inc. <http://www.typesafe.com>
+ */
 package akka.remote
 
 import scala.language.postfixOps
@@ -400,7 +403,12 @@ private[remote] class EndpointManager(conf: Config, log: LoggingAdapter) extends
 
   val accepting: Receive = {
     case ManagementCommand(cmd, statusPromise) ⇒
-      transportMapping.values foreach { _.managementCommand(cmd, statusPromise) }
+      val allStatuses = transportMapping.values map { transport ⇒
+        val p = Promise[Boolean]()
+        transport.managementCommand(cmd, p)
+        p.future
+      }
+      statusPromise completeWith Future.fold(allStatuses)(true)(_ && _)
 
     case s @ Send(message, senderOption, recipientRef) ⇒
       val recipientAddress = recipientRef.path.address