support for boost::tuples

[SVN r35350]

include/boost/fusion/sequence/container/list/cons.hpp

@@ -87,16 +87,12 @@ namespace boost { namespace fusion
         template <typename Sequence>
         explicit cons(
             Sequence const& seq
-//~ #if defined(BOOST_MSVC)
-// VC++ gets confused when RHS is a derived type. It fails to call
-// the copy ctor and attempts to call this templated constructor instead.
           , typename disable_if<
                 mpl::or_<
                     is_convertible<Sequence, cons> // use copy ctor instead
                   , is_convertible<Sequence, Car>  // use copy to car instead
                 > 
             >::type* dummy = 0
-//~ #endif
         )
             : car(*fusion::begin(seq))
             , cdr(fusion::next(fusion::begin(seq)), mpl::true_()) {}