make: Global change: Move all public headers to include folder.  Change source to including public headers using #include <ndn-cpp/*>. Split some header files to minimize exposing C .h files.
diff --git a/ndn-cpp/security/identity/memory-private-key-storage.cpp b/ndn-cpp/security/identity/memory-private-key-storage.cpp
index af2ac13..09f1c66 100644
--- a/ndn-cpp/security/identity/memory-private-key-storage.cpp
+++ b/ndn-cpp/security/identity/memory-private-key-storage.cpp
@@ -9,8 +9,8 @@
 #include <stdexcept>
 #endif
 #include "../../c/util/crypto.h"
-#include "../security-exception.hpp"
-#include "memory-private-key-storage.hpp"
+#include <ndn-cpp/security/security-exception.hpp>
+#include <ndn-cpp/security/identity/memory-private-key-storage.hpp>
 
 using namespace std;
 using namespace ndn::ptr_lib;