perl-packages.nix: partially revert 7a459962331e095c

The commit referred to non-existent license "stdenv.lib.licenses.perl5".
haskell-nixpkgs.nix: update Cabal to version 1.20.0.2
haskell-hflags: re-generate with cabal2nix
Remove obsolete jackaudio version 1.
haskell-thyme: re-generate with cabal2nix
haskell-folds: update to version 0.6.2
haskell-free-game: update to version 1.1.78
haskell-easy-file: add version 0.2.0
haskell-parsers: update to version 0.12.1
haskell-nc-indicators: update to version 0.3
haskell-MFlow: update to version 0.4.5.6
haskell-adjunctions: update to version 4.2
haskell-atomic-primops: update to version 0.6.0.6
haskell-bindings-GLFW: update to version 3.0.3.3
haskell-classy-prelude-conduit: update to version 0.9.3
haskell-classy-prelude: update to version 0.9.3
haskell-cmdargs: update to version 0.10.9
haskell-comonad: update to version 4.2.2
haskell-conduit-combinators: update to version 0.2.8.2
haskell-contravariant: update to version 1.1