Some potential fixes for clang, not complete

luabind/luabind/detail/format_signature.hpp

@@ -13,12 +13,17 @@
 # include <boost/mpl/next.hpp>
 # include <boost/mpl/size.hpp>
 
-namespace luabind {
+namespace luabind { namespace adl {
 
-class object;
-class argument;
-template <class Base>
-struct table;
+	class object;
+	class argument;
+	template <class Base>
+	struct table;
+} // namespace adl
+
+using adl::object;
+using adl::argument;
+using adl::table;
 
 } // namespace luabind