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/tests/mgmt/command-validator.cpp b/tests/mgmt/command-validator.cpp
index 7f34971..69c44a0 100644
--- a/tests/mgmt/command-validator.cpp
+++ b/tests/mgmt/command-validator.cpp
@@ -27,10 +27,10 @@
 
 #include "tests/test-common.hpp"
 
-#include <boost/test/unit_test.hpp>
 #include <ndn-cpp-dev/util/command-interest-generator.hpp>
 #include <ndn-cpp-dev/util/io.hpp>
 #include <boost/filesystem.hpp>
+#include <fstream>
 
 namespace nfd {