[Haskell-iPhone] building LLVM 3.0 on OSX 10.8

[Stefan Kersten]

hi,

LLVM 3.0 doesn't seem to build out of the box on 10.8, maybe something like the following could be added to the wiki:

### Building LLVM 3.0 on OSX 10.8

Building LLVM 3.0 on 10.8 fails; this [issue report](https://github.com/staticfloat/homebrew/commit/45151ab7defaf4341f16cfee6ba751cd2848124e) provides a fix in the associated [patch](http://pastebin.com/raw.php?i=SP2YcKFx):

    $ curl http://pastebin.com/raw.php?i=SP2YcKFx | patch -p1

<sk>