Have the gtk package dep on mtl even when not building the cairo bindings
Have the gtk package dep on mtl even when not building the cairo bindings

We now always need mtl, previously it was only the cairo bits that needed it.

darcs-hash:20070531094825-adfee-c7a4ff26f8cf50b7ff911b2a7bad817a7c2ddd00.gz

thiagoarrais/gtk2hs,thiagoarrais/gtk2hs,thiagoarrais/gtk2hs