[haskell-llvm] move to mtl-2.0

[Henning Thielemann]

On Fri, 26 Nov 2010, Henning Thielemann wrote:

> I like to move 'llvm' to transformers/mtl-2. Any reasons that might prevent 
> me from doing so?
>
> I would also like to make the version bounds of the package dependencies a 
> bit stricter. The llvm package does no longer work with mtl-2, since the 
> State constructor is gone, but the Cabal file pretends it would work.

I was wrong, it can be compiled with mtl-2.