patch applied (ghc): Extend API for compiling to and from Core

[Tim Chevalier]

Tue Dec 25 12:04:11 PST 2007  Tim Chevalier <chevalier at alum.wellesley.edu>
  * Extend API for compiling to and from Core
  
  Added API support for compiling Haskell to simplified Core, and for
  compiling Core to machine code. The latter, especially, should be
  considered experimental and has only been given cursory testing. Also
  fixed warnings in DriverPipeline. Merry Christmas.

    M ./compiler/basicTypes/DataCon.lhs -1 +1
    M ./compiler/basicTypes/Module.lhs -2 +10
    M ./compiler/main/DriverPipeline.hs -40 +40
    M ./compiler/main/DynFlags.hs -1 +1
    M ./compiler/main/Finder.lhs -10 +6
    M ./compiler/main/GHC.hs -21 +120
    M ./compiler/main/HscMain.lhs +4
    M ./compiler/main/HscTypes.lhs -2 +4