Added haskell-mtl dependency that was in the cabal script. Updated build
methods.
shellcheck: Updated to v0.3.4. Had to add export LANG=en_US.UTF-8 in order for build to work correctly
Added playonlinux-git package
Merge branch 'master' of github.com:justin8/packages

Conflicts:
	Arch/shellcheck/PKGBUILD