[boost] [test] regression with latest change to libs/test/src/test_tools.cpp

FYI, latest changes to the aforementioned file seem to break things for msvc-stlport, as shown for instance at: http://tinyurl.com/6br7t [format] http://tinyurl.com/6xt58 [minmax] http://tinyurl.com/48hd6 [multi_index] Joaquín M´López Muñoz Telefónica, Investigación y Desarrollo