patch applied (testsuite): Refuse to use threads unless python version >= 2.5.2

[Ian Lynagh]

Wed Jun 11 08:51:48 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Refuse to use threads unless python version >= 2.5.2
  According to trac #1558, 2.5.2 should work. It's possible a lower bound,
  e.g. 2.5, would suffice.

    M ./driver/runtests.py -1 +12

View patch online:
http://darcs.haskell.org/testsuite/_darcs/patches/20080611155148-3fd76-1b3a8135ef9ef586f2fc255f25335aa6ef9e4eb4.gz