[boost] tr1/test_function_tricky trickier than needed

The only reason for test_function_tricky.cpp to not compile with boost::function is the presence of the following two lines: BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::unary_function<int, long>, std::tr1::function<long (int)> >::value)); BOOST_STATIC_ASSERT((::boost::is_base_and_derived<std::binary_function<int, char, double>, std::tr1::function<double (int,char)> >::value)); that check for the (highly questionable and not particularly relevant) requrement that function<> should derive from unary_function or binary_function in some cases. I think that these two lines need to be moved to a separate test.