Resolve compilation issues (more accurate with headers)
diff --git a/helper/ccnx-stack-helper.cc b/helper/ccnx-stack-helper.cc
index 0809d58..2631be2 100644
--- a/helper/ccnx-stack-helper.cc
+++ b/helper/ccnx-stack-helper.cc
@@ -70,16 +70,17 @@
 #include "ns3/point-to-point-helper.h"
 
 #include "../model/ccnx-forwarding-strategy.h"
+#include "../model/ccnx-net-device-face.h"
+#include "../model/ccnx-l3-protocol.h"
+#include "../model/ccnx-fib.h"
 
-#include "ns3/ccnx-net-device-face.h"
-#include "ns3/ccnx-l3-protocol.h"
-#include "ns3/ccnx-fib.h"
 #include "ns3/node-list.h"
 #include "ns3/loopback-net-device.h"
 #include "ns3/global-router-interface.h"
 #include "ns3/ipv4.h"
 #include "ns3/ipv4-global-routing.h"
-#include "ns3/ipv4-global-routing-ordered-nexthops.h"
+#include "../utils/ipv4-global-routing-ordered-nexthops.h"
+
 #include "ns3/ipv4-routing-helper.h"
 #include "ns3/ipv4-global-routing-helper.h"
 #include "ns3/data-rate.h"