ndnboost: Also rename BOOST_ to NDNBOOST_
diff --git a/include/ndnboost/concept/detail/concept_undef.hpp b/include/ndnboost/concept/detail/concept_undef.hpp
index 713db89..b563876 100644
--- a/include/ndnboost/concept/detail/concept_undef.hpp
+++ b/include/ndnboost/concept/detail/concept_undef.hpp
@@ -1,5 +1,5 @@
 // Copyright David Abrahams 2006. Distributed under the Boost
 // Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-# undef BOOST_concept_typename
-# undef BOOST_concept
+# undef NDNBOOST_concept_typename
+# undef NDNBOOST_concept