all: InterestHeader and ContentObjectHeader refactoring to Interest and ContentObject

refs #29
diff --git a/model/fw/per-out-face-limits.h b/model/fw/per-out-face-limits.h
index 2c4a935..2929b5b 100644
--- a/model/fw/per-out-face-limits.h
+++ b/model/fw/per-out-face-limits.h
@@ -87,7 +87,7 @@
   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);
   
@@ -134,7 +134,7 @@
 bool
 PerOutFaceLimits<Parent>::CanSendOutInterest (Ptr<Face> inFace,
                                               Ptr<Face> outFace,
-                                              Ptr<const InterestHeader> header,
+                                              Ptr<const Interest> header,
                                               Ptr<const Packet> origPacket,
                                               Ptr<pit::Entry> pitEntry)
 {