added stl_concept_covering.cpp

[SVN r15512]

Jamfile

@@ -3,6 +3,7 @@ subproject libs/concept_check ;
 SEARCH on testing.jam = $(BOOST_BUILD_PATH) ;
 include testing.jam ;
 
+compile stl_concept_covering.cpp ;
 compile concept_check_test.cpp ;
 compile class_concept_check_test.cpp ;
 link-fail concept_check_fail_expected.cpp ;