Patch to make deriving from fusion::sequence_facade makes the derived class an MPL sequence by Nathan Ridge.

[SVN r74473]

include/boost/fusion/sequence/sequence_facade.hpp

@@ -17,6 +17,7 @@ namespace boost { namespace fusion
     template <typename Derived, typename Category, typename IsView = mpl::false_>
     struct sequence_facade : sequence_base<Derived>
     {
+        typedef fusion_sequence_tag tag;
         typedef sequence_facade_tag fusion_tag;
         typedef Derived derived_type;
         typedef Category category;