[Boost-build] Bugs in the clean.py test script.

From: Jurko Gospodnetiæ (jurko_for_boost_at_[hidden])
Date: 2007-03-31 15:53:35

   Hi.

   The clean.py test script seems to test the '--clean' parameter twice 
with not options instead of testing '--clean' and '--clean-all' each.

   Also the clean target could be tested here...

   Hope this helps...

   Best regards,
     Jurko Gospodnetiæ