patch applied (testsuite): Simplify, and correct, the code for determining whether we should use threads

[Ian Lynagh]

Thu Jun 12 09:00:52 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Simplify, and correct, the code for determining whether we should use threads

    M ./driver/runtests.py +1
    M ./driver/testglobals.py -1 +1
    M ./mk/test.mk -3

View patch online:
http://darcs.haskell.org/testsuite/_darcs/patches/20080612160052-3fd76-7373d86dbcf05127a46a1c0e19e6de9fa6af547f.gz