[cvs-nhc98] patch applied (york-compiler98): New solution to the differences between nhc98 and yhc.

[Malcolm Wallace]

Tue Jun 26 02:35:03 PDT 2007  Malcolm.Wallace at cs.york.ac.uk
  * New solution to the differences between nhc98 and yhc.
  Use a global constant (Building.compiler) to switch the behaviour of the
  compiler, where it differs.  Mainly affects where pre-defined functions
  are imported from, and whether primitive MAGIC is invoked or not.

    A ./Building.hs
    M ./Compile.lhs -1 +1
    M ./Lift.hs -19 +22
    M ./PreImport.hs -3 +3
    M ./PrimCode.hs -3 +5
    M ./TokenId.hs -39 +32