Merge pull request #17925 from ktoso/wip-move-BackoffSupervisor-ktoso

!per +act #17842 move BackoffSupervisor to akka.pattern

akka-docs/rst/scala/code/docs/pattern/BackoffSupervisorDocSpec.scala

@@ -0,0 +1,31 @@
+/**
+ * Copyright (C) 2009-2015 Typesafe Inc. <http://www.typesafe.com>
+ */
+
+package docs.pattern
+
+import akka.actor.{ActorSystem, Props}
+import akka.pattern.BackoffSupervisor
+import akka.testkit.TestActors.EchoActor
+
+class BackoffSupervisorDocSpec {
+
+  class BackoffSupervisorDocSpecExample {
+    val system: ActorSystem = ???
+    import scala.concurrent.duration._
+
+    //#backoff
+    val childProps = Props(classOf[EchoActor])
+    
+    val supervisor = BackoffSupervisor.props(
+      childProps,
+      childName = "myEcho",
+      minBackoff = 3.seconds,
+      maxBackoff = 30.seconds,
+      randomFactor = 0.2) // adds 20% "noise" to vary the intervals slightly
+
+    system.actorOf(supervisor, name = "echoSupervisor")
+    //#backoff
+  }
+
+}

akka-docs/rst/scala/code/docs/persistence/PersistenceDocSpec.scala

@@ -5,6 +5,7 @@
 package docs.persistence
 
 import akka.actor.{ Actor, ActorRef, ActorSystem, Props }
+import akka.pattern.BackoffSupervisor
 import akka.persistence._
 
 import scala.concurrent.duration._