[Haskell-cafe] Regression moving to ghc7

[tsuraan]

> From the #haskell channel, it looks like the horrible speed issue on
> this code is specific to my system.  I'm re-building ghc7 now
> (bootstrapping ghc7 with ghc7 instead of ghc6), so maybe that will
> make something happier.

FWIW, rebuilding ghc7 using ghc7 as the bootstrapping implementation
(and disabling the ghcquickbuild option, whatever that does) did give
me a sane ghc7 that is giving the expected speeds.  So, if anybody
feels like pointing fingers at anything I could be doing better in my
program, that's definitely welcome, but the regression part of my
problem is gone.