haskell-fay: update to version 0.20.1.3
haskell-vcswrapper: update to version 0.1.0
haskell-Agda: update to version 2.4.2

I had to disable the Haddock phase because of lots of errors:

  http://hydra.cryp.to/build/181564/nixlog/1/raw
Add haskell-directory-layout 0.7.4
haskell-scotty: update to version 0.9.0
haskell-llvm-general: update to version 3.4.4.x
haskell-packages.nix: cosmetic
haskell-scotty: disable test suite to break infinite recursion with hspec-wai
haskell-binary-conduit: jailbreak to fix build with conduit 1.2.x
haskell-hakyll: jailbreak to fix build with pandoc-citeproc 0.5
pinfo: resurrect, update, add meta
update dd_rescue
Update eigen
Adding vpnc configuration module
Oops; a mistake with src
Revert "Revert "Merge pull request #3182 from wkennington/master.ipv6""

This reverts commit ea8910652fcecbcd4f21aa1c66b1a0a239408b04.
Revert "Revert "Fix syntax error in nixos/lib/build-vms.nix, introduced by 86c0f8c""

This reverts commit 2f697bf6931b24cdd428e22effbf6427a85afd42.
nixos/network-interfaces: Fix bug in converting old ipAddresses
cleanup per Lethalman's suggestions
Update and adopt LVM2.