patch applied (bytestring): Disable old array fusion mechanisms, was messing with the simplifier. Big perf improvements to lazy map/filter/fold

[Don Stewart]

Sun Dec 16 14:40:36 PST 2007  Don Stewart <dons at galois.com>
  * Disable old array fusion mechanisms, was messing with the simplifier. Big perf improvements to lazy map/filter/fold

    M ./Data/ByteString.hs -119 +26
    M ./Data/ByteString/Char8.hs -1 +24
    M ./Data/ByteString/Lazy.hs -11 +48
    M ./Data/ByteString/Lazy/Char8.hs -1 +24