changed no_type to a struct

[SVN r16161]

include/boost/type_traits/detail/yes_no_type.hpp

@@ -16,7 +16,10 @@ namespace boost {
 namespace type_traits {
 
 typedef char yes_type;
-typedef double no_type;
+struct no_type
+{
+   char padding[8];
+};
 
 } // namespace type_traits
 } // namespace boost