Add patched timezone-series so that it installs with new GHC

pkg: https://www.dropbox.com/sh/kj1tdcoq1szbzlk/oZVXz4TYa2

I've patched the [timezone-series](https://hackage.haskell.org/package/timezone-series) package so that it installs with newer GHC. This package is optionally required by `xmobar`. 

Also see: https://github.com/rejuvyesh/timezone-series-git

Edit: Add [timezone-olson](https://hackage.haskell.org/package/timezone-olson) as well.