Tweaks for xpressive

[SVN r34928]

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

@@ -24,6 +24,7 @@
 #include <boost/fusion/support/sequence_base.hpp>
 #include <boost/mpl/int.hpp>
 #include <boost/mpl/bool.hpp>
+#include <boost/mpl/or.hpp>
 
 namespace boost { namespace fusion
 {
@@ -86,7 +87,12 @@ namespace boost { namespace fusion
         template <typename Sequence>
         explicit cons(
             Sequence const& seq
-          , typename disable_if<is_convertible<Sequence, Car> >::type* dummy = 0)
+          , 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)
             : car(*fusion::begin(seq))
             , cdr(fusion::next(fusion::begin(seq)), mpl::true_()) {}
 

include/boost/fusion/sequence/io/in.hpp

@@ -18,13 +18,13 @@
 
 namespace boost { namespace fusion
 {
-    template <typename IStream, typename Sequence>
+    template <typename Sequence>
     inline typename
         enable_if<
             fusion::traits::is_sequence<Sequence>
-          , IStream&
+          , std::istream&
         >::type
-    operator>>(IStream& is, Sequence& seq)
+    operator>>(std::istream& is, Sequence& seq)
     {
         detail::read_sequence(is, seq);
         return is;

include/boost/fusion/sequence/io/out.hpp

@@ -18,13 +18,13 @@
 
 namespace boost { namespace fusion
 {
-    template <typename OStream, typename Sequence>
+    template <typename Sequence>
     inline typename
         enable_if<
            fusion::traits::is_sequence<Sequence>
-          , OStream&
+          , std::ostream&
         >::type
-    operator<<(OStream& os, Sequence const& seq)
+    operator<<(std::ostream& os, Sequence const& seq)
     {
         detail::print_sequence(os, seq);
         return os;