Many corrections to face/local-face/net-device-face/fib/pit.  Now
interest packets actually go down to ccnx stack.  Also, now it is
possible to manually configure FIB entries.

CcnxFib now is an object aggregated to the node
diff --git a/model/ccnx-name-components.h b/model/ccnx-name-components.h
index 7e2bb71..ea64635 100644
--- a/model/ccnx-name-components.h
+++ b/model/ccnx-name-components.h
@@ -41,7 +41,7 @@
    * \brief Creates a prefix with zero components (can be looked as root "/")
    */
   CcnxNameComponents ();
-  CcnxNameComponents (const std::string &s);
+  // CcnxNameComponents (const std::string &s);
   CcnxNameComponents (const std::list<boost::reference_wrapper<const std::string> > &components);
   
   inline void