Update lightweight_test.hpp and hash.hpp references to the actual boost components.

test/container_size_test.cpp

@@ -9,7 +9,7 @@
 // See http://www.boost.org/libs/intrusive for documentation.
 //
 /////////////////////////////////////////////////////////////////////////////
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 #include <cstddef>
 
 #include <boost/intrusive/list.hpp>