patch applied (ghc): get freshBlockId out of ZipCfg and bury it in MkZipCfg where it belongs

[nr at eecs.harvard.edu]

Sat Sep 15 13:10:30 PDT 2007  Norman Ramsey <nr at eecs.harvard.edu>
  * get freshBlockId out of ZipCfg and bury it in MkZipCfg where it belongs

    M ./compiler/cmm/Cmm.hs -2 +2
    M ./compiler/cmm/DFMonad.hs -2 +2
    M ./compiler/cmm/MkZipCfg.hs +9
    M ./compiler/cmm/ZipCfg.hs -17 +8
    M ./compiler/cmm/ZipDataflow.hs -1 +1
    M ./compiler/codeGen/CgMonad.lhs -2 +2