DER: In visitor code, use ndnboost::any. We can use ndnboost::any because this is an internal header and will not conflict with the application if it uses boost::any.
diff --git a/include/Makefile.am b/include/Makefile.am
index 8ea2630..fa88f74 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -75,6 +75,7 @@
ndnboost/algorithm/string/sequence_traits.hpp \
ndnboost/algorithm/string/yes_no_type.hpp \
ndnboost/aligned_storage.hpp \
+ ndnboost/any.hpp \
ndnboost/array.hpp \
ndnboost/assert.hpp \
ndnboost/bind/apply.hpp \