Add support for shared_ptr<X[N>.

[SVN r81253]

test/Jamfile.v2

@@ -73,6 +73,7 @@ import testing ;
           [ run sp_array_test.cpp ]
           [ compile sp_array_cv_test.cpp ]
           [ run sp_convertible_test.cpp ]
+          [ run sp_array_n_test.cpp ]
 
           [ compile-fail array_fail_spa_sp_c.cpp ]
           [ compile-fail array_fail_sp_spa_c.cpp ]