darcs patch: rewrite of Distribution.Simple.Haddock (and 1 more)

2 Mar 2009

      Thu Feb 19 16:37:38 CET 2009  Andrea Vezzosi 
  * rewrite of Distribution.Simple.Haddock
  In addition to (hopefully) making clear what's going on
  we now do the additional preprocessing for all the versions of haddock 
  (but not for hscolour) and we run cpp before moving the files.

Mon Mar  2 02:51:37 CET 2009  Andrea Vezzosi 
  * use -D__HADDOCK__ only when preprocessing for haddock < 2
  haddock-2.x doesn't define any additional macros.