First steps in CCNx packet coding. ccnx_encode* routines rewritten in NS3 style (using NS3::Buffer)

diff --git a/helper/ccnx-trace-helper.h b/helper/ccnx-trace-helper.h
index 6c4fa7b..a0390e7 100644
--- a/helper/ccnx-trace-helper.h
+++ b/helper/ccnx-trace-helper.h
@@ -1,4 +1,4 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
 /*
  * Copyright (c) 2010 University of Washington
  *