all: InterestHeader and ContentObjectHeader refactoring to Interest and ContentObject

refs #29
diff --git a/model/fw/per-fib-limits.h b/model/fw/per-fib-limits.h
index 4affec9..6a18f13 100644
--- a/model/fw/per-fib-limits.h
+++ b/model/fw/per-fib-limits.h
@@ -99,7 +99,7 @@
   virtual bool
   CanSendOutInterest (Ptr<Face> inFace,
                       Ptr<Face> outFace,
-                      Ptr<const InterestHeader> header,
+                      Ptr<const Interest> header,
                       Ptr<const Packet> origPacket,
                       Ptr<pit::Entry> pitEntry);
 
@@ -141,7 +141,7 @@
 bool
 PerFibLimits<Parent>::CanSendOutInterest (Ptr<Face> inFace,
                                           Ptr<Face> outFace,
-                                          Ptr<const InterestHeader> header,
+                                          Ptr<const Interest> header,
                                           Ptr<const Packet> origPacket,
                                           Ptr<pit::Entry> pitEntry)
 {