patch applied (ghc): Renamed CmmCPSData to CmmBrokenBlock and documented it

[Simon Marlow]

Thu May 24 09:01:28 PDT 2007  Michael D. Adams <t-madams at microsoft.com>
  * Renamed CmmCPSData to CmmBrokenBlock and documented it

     ./compiler/cmm/CmmCPSData.hs -> ./compiler/cmm/CmmBrokenBlock.hs
    M ./compiler/cmm/CmmBrokenBlock.hs -37 +142
    M ./compiler/cmm/CmmCPS.hs -2 +6
    M ./compiler/cmm/CmmProcPoint.hs -1 +1