patch applied (testsuite): clean up the extra_ways machinery

[Simon Marlow]

Wed Jun 27 02:05:15 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * clean up the extra_ways machinery

    M ./driver/runtests.py -2 +4
    M ./driver/testglobals.py +4
    M ./driver/testlib.py -1 +4