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/PacketOutNotification.java b/src/main/java/net/onrc/onos/core/packetservice/PacketOutNotification.java
index d95ddf2..0307d2f 100644
--- a/src/main/java/net/onrc/onos/core/packetservice/PacketOutNotification.java
+++ b/src/main/java/net/onrc/onos/core/packetservice/PacketOutNotification.java
@@ -20,7 +20,7 @@
     private final byte[] packet;
 
     /**
-     * Default constructor.
+     * Default constructor, used for deserialization.
      */
     protected PacketOutNotification() {
         packet = null;