Small reorganization of utils/ folder contents
diff --git a/model/pit/ndn-pit-impl.h b/model/pit/ndn-pit-impl.h
index 64e1fc0..00cfe3c 100644
--- a/model/pit/ndn-pit-impl.h
+++ b/model/pit/ndn-pit-impl.h
@@ -23,7 +23,7 @@
 
 #include "ndn-pit.h"
 
-#include "../../utils/trie-with-policy.h"
+#include "../../utils/trie/trie-with-policy.h"
 
 #include "ndn-pit-entry-impl.h"