Ported proxyarp to the new packet-out interface.

Removed dependency on FloodlightProvider and FlowPusher.

Change-Id: Ifc18380255546b5271c5c7a6671f92953b90124a
diff --git a/src/main/java/net/onrc/onos/core/packetservice/SinglePacketOutNotification.java b/src/main/java/net/onrc/onos/core/packetservice/SinglePacketOutNotification.java
index cd604ea..edf017b 100644
--- a/src/main/java/net/onrc/onos/core/packetservice/SinglePacketOutNotification.java
+++ b/src/main/java/net/onrc/onos/core/packetservice/SinglePacketOutNotification.java
@@ -16,6 +16,9 @@
     private final long outSwitch;
     private final short outPort;
 
+    /**
+     * Default constructor, used for deserialization.
+     */
     protected SinglePacketOutNotification() {
         address = 0;
         outSwitch = 0;