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]

test/hash_no_ext_fail_test.cpp

@@ -12,10 +12,9 @@
 
 #include <boost/functional/hash.hpp>
 #include <boost/functional/hash.hpp>
-#include <set>
 
 int main()
 {
-    HASH_NAMESPACE::hash< std::set<int> > hasher;
+    HASH_NAMESPACE::hash< int[10] > hasher;
     return 0;
 }