patch applied (ghc): In cabal.mk, clean is no longer identical to distclean

[Ian Lynagh]

Tue Aug 12 16:24:46 PDT 2008  Ian Lynagh <igloo at earth.li>
  * In cabal.mk, clean is no longer identical to distclean
  distclean will now also remove files listed in EXTRA_DISTCLEAN

    M ./mk/cabal.mk -3 +6

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080812232446-3fd76-591dbc04b7aacc640c2666d7b2eda75051ee2a88.gz