src: Another round of source updates: moving all headers close to implementation files

Change-Id: I3d47076504950e67746174623c75383948e9d93d
diff --git a/src/data.cpp b/src/data.cpp
index 19db78f..85d87a5 100644
--- a/src/data.cpp
+++ b/src/data.cpp
@@ -5,8 +5,8 @@
  * See COPYING for copyright and distribution information.
  */
 
-#include <ndn-cpp-dev/common.hpp>
-#include <ndn-cpp-dev/data.hpp>
+#include "common.hpp"
+#include "data.hpp"
 
 using namespace std;