Add a test that unnecessary copies aren't made of objects inserted.

Make the exception tests track the allocator usage.
Speed up the exception tests a bit.


[SVN r3490]

test/exception/swap_tests.cpp

@@ -24,7 +24,7 @@ struct self_swap_base : public test::exception_base
         std::string scope(test::scope);
 
 #if BOOST_UNORDERED_SWAP_METHOD != 2
-        BOOST_CHECK(
+        HASH_CHECK(
                 scope == "hash::operator(hash)" ||
                 scope == "hash::operator=(hash)" ||
                 scope == "equal_to::operator(equal_to)" ||