Add tc_optional_base test

test/Jamfile.v2

@@ -43,6 +43,7 @@ import testing ;
     [ run optional_test_emplace.cpp ]
     [ run optional_test_minimum_requirements.cpp ]
     [ run optional_test_msvc_bug_workaround.cpp ]
+    [ run optional_test_tc_base.cpp ]
     [ compile optional_test_sfinae_friendly_ctor.cpp ]
     [ compile-fail optional_test_ref_convert_assign_const_int_prevented.cpp ]
     [ compile-fail optional_test_fail1.cpp ]