Various fixes for NFD/ndn-cxx 0.7.0

Change-Id: I68e5d4d57d81c3f2e46fc59680cd416b06c8190c
diff --git a/model/ndn-net-device-transport.hpp b/model/ndn-net-device-transport.hpp
index e68382d..22b07de 100644
--- a/model/ndn-net-device-transport.hpp
+++ b/model/ndn-net-device-transport.hpp
@@ -62,7 +62,7 @@
   doClose() override;
 
   virtual void
-  doSend(Packet&& packet) override;
+  doSend(const Block& packet, const nfd::EndpointId& endpoint) override;
 
   void
   receiveFromNetDevice(Ptr<NetDevice> device,