Add tests for container_fwd to hash tests.

[SVN r31044]

test/Jamfile.v2

@@ -25,6 +25,7 @@ test-suite functional/hash
         [ run hash_set_test.cpp framework ]
         [ run hash_map_test.cpp framework ]
         [ run link_test.cpp link_test_2.cpp ]
+        [ run container_fwd_test.cpp ]
     ;
 
 build-project ../examples ;