Changes to ghc(2)

Changes to ghc:
commit edae31ab65718f57a3f326175a9320dc456f30cf
Author: Jan Stolarek <jan.stolarek@p.lodz.pl>
Date:   Fri Jul 11 14:33:38 2014 +0200

    Comments only

commit 8e396b08e4e095ded8f6ff93f5b265a03015717e
Author: Jan Stolarek <jan.stolarek@p.lodz.pl>
Date:   Fri Jul 11 14:25:27 2014 +0200

    Remove unused parameter in rnHsTyVar