patch applied (cabal): Change Compiler's compilerVersion fild to compilerId

[Duncan Coutts]

Thu Aug  2 12:34:00 PDT 2007  Duncan Coutts <duncan at haskell.org>
  * Change Compiler's compilerVersion fild to compilerId
  Of type PackageIdentifier rather than Version.

    M ./Distribution/Compiler.hs -5 +11
    M ./Distribution/PreProcess.hs -10 +12
    M ./Distribution/Simple/Configure.hs -4 +5
    M ./Distribution/Simple/GHC.hs -2 +3
    M ./Distribution/Simple/Register.hs -1 +2