[Tim Wood]

Thanks! I've no idea how that dependency went missing, but I've pushed a patch with it re-added.

As far as ruby 1.9, we haven't even tried it. We've having plenty of fun trying to keep up with Mac OS X, Xcode and iOS betas. I suppose 1.9 is getting stable enough we should try it, but until it is installed on the system by default we won't be requiring it.