Let's make the tests also compile with boost 1.33 (auto_unit_test.hpp is

Let's make the tests also compile with boost 1.33 (auto_unit_test.hpp is
a compat header in 1.34, so we can use it, and the
BOOST_AUTO_TEST_MAIN define is a no-op in 1.34 boost, so we also can use
it unconditionally).