model: Major API changes
Interest and ContentObject are no longer derived from Header class.
Instead, they are encapsulating payload and, optionally, wire-formatted
Packet object.
Refs #1005 (http://redmine.named-data.net/)
diff --git a/model/ndn-common.h b/model/ndn-common.h
new file mode 100644
index 0000000..3581a4c
--- /dev/null
+++ b/model/ndn-common.h
@@ -0,0 +1,17 @@
+/** -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ * Alexander Afanasyev
+ *
+ * BSD license, See the doc/LICENSE file for more information
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef NDN_COMMON_H
+#define NDN_COMMON_H
+
+#define NDN_NAMESPACE_BEGIN namespace ns3 { namespace ndn {
+#define NDN_NAMESPACE_END } /*ndn*/ } /*ns3*/
+
+#endif // NDN_COMMON_H