patch applied (ghc-fc2): Massive patch for the first months work adding System FC to GHC #6

[chak at cse.unsw.edu.au]

Fri Aug  4 12:35:30 PDT 2006  Manuel M T Chakravarty <chak at cse.unsw.edu.au>
  * Massive patch for the first months work adding System FC to GHC #6
  
  Broken up massive patch -=chak
  Original log message:  
  This is (sadly) all done in one patch to avoid Darcs bugs.
  It's not complete work... more FC stuff to come.  A compiler
  using just this patch will fail dismally.

    M ./compiler/coreSyn/CoreSubst.lhs -13 +31
    M ./compiler/coreSyn/CoreUnfold.lhs +2