- DSH: updated to version 0.7.8.1
- alex: updated to versino 3.0.2
- certificate: updated to version 1.2.2
- language-c: updated to version 0.4.2
- xhtml: updated to version 3000.2.1
Also, downgraded GHC 7.4.1 environment to use mtl 2.0 and transformers 2.0 to
avoid lots of build errors, i.e. with monad-par.
svn path=/nixpkgs/trunk/; revision=34042