[Hackage] #396: Generate autogen files for haddock as well as build

[Hackage]

#396: Generate autogen files for haddock as well as build
------------------------------+---------------------------------------------
  Reporter:  duncan           |        Owner:           
      Type:  defect           |       Status:  new      
  Priority:  normal           |    Milestone:  Cabal-1.6
 Component:  Cabal library    |      Version:  1.2.3.0  
  Severity:  minor            |     Keywords:           
Difficulty:  easy (<4 hours)  |   Ghcversion:  6.8.3    
  Platform:                   |  
------------------------------+---------------------------------------------
 Building haddock docs with haddock-2.x fails if a build was not done
 first, due to the cabal_macros.h file missing.

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/396>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects