Use an array instead of std::set in hash_no_ext_fail_test, as that seems like a better test for older compilers.

[SVN r33194]

libs/functional

@@ -1 +1 @@
-Subproject commit 7a741bf44aaa60c65c5c430a1304f1a61721384e
+Subproject commit 9065912ab312dfae3fa01b6ba6505489a5e0cfe2