all: cleanup common.hpp and import typenames from ndn namespace.

This allows us to compile NFD in C++11 mode, making use of std::shared_ptr,
std::function, std::bind, etc. rather than their boost equivalents
(provided that ndn-cpp-dev is also compiled in C++11 mode). This is an
experimental feature and may not work properly.

Change-Id: I310529f78e1e428a8530b087983130d1ef3a9d88
diff --git a/daemon/mgmt/fib-manager.hpp b/daemon/mgmt/fib-manager.hpp
index eef58fa..4c3bf8d 100644
--- a/daemon/mgmt/fib-manager.hpp
+++ b/daemon/mgmt/fib-manager.hpp
@@ -26,14 +26,12 @@
 #define NFD_MGMT_FIB_MANAGER_HPP
 
 #include "common.hpp"
-#include "face/face.hpp"
-#include "mgmt/app-face.hpp"
-#include "fw/strategy.hpp"
 #include "mgmt/manager-base.hpp"
 #include "mgmt/fib-enumeration-publisher.hpp"
 
 namespace nfd {
 
+class Face;
 class Forwarder;
 class Fib;