texlive: Updated to latest release 2014.20140927
closes #463 pythonPackages now uses self variable instead of rec builtin
xcodeenv: make version 6.0.1 the default
Merge pull request #4507 from geerds/texlive

texlive: Update to latest release 2014.20140927
texlive: add jwiegley as a maintainer
haskell-hakyll: Allow it to build again