[Boost-build] Patch for the inherit_toolset.py test.

From: Jurko Gospodnetiæ (jurko.gospodnetic_at_[hidden])
Date: 2007-12-22 23:28:47

   Hi.

   Attached patch makes the inherit_toolset.py test pass. That's one 
down... :-)

   Best regards,
     Jurko Gospodnetiæ