vimPlugins.YouCompleteMe: update to ee12530df0
openvpn: add openvpn_learnaddress script
nixos/network-interfaces: add support for static ipv6 addresses
Add nix-run and myEnvRun

This adds nix-run, which is a thin wrapper around nix-build.
nix-run calls nix-build, and then executes the resulting build.
If no executable artifact is built, nix-runs outputs an error
message.

myEnvRun calls myEnvFun and builds a script that directly runs
the load-env-* script.

Together, nix-run and myEnvRun allows you to set up an environment
that can be loaded in this way:

  envs.nix:
    {
      gcc = myEnvRun {
        name = "gcc";
        buildInputs = [ gcc ];
      };
    }

  $ nix-run -A gcc envs.nix

You end up directly in your environment without having to do
nix-env -i. You will always have a fresh environment and you
don't have to pollute you profile with a lot of env packages.
Added darcsum, "a pcl-cvs like interface for managing darcs patches".
Configure postgresql-9.3 with support for the ossp-uuid module
Make OCaml 4.01.0 the default version of OCaml.
Also change the ocaml attribute to always point to the one of the current
ocamlPackages.
oraclejdk7: add missing dependencies
Fixes
Update VirtualBox (and implicitly VirtualBox Guest Additions) to 4.3.6 and Oracle VM VirtualBox Extension Pack to 91406
Update OCaml Type_conv to version 109.60.01.
Also keep the old version 3.0.5 around for compatibility with OCaml 3.12.1.
Update OCaml Batteries to version 2.2.0
Add OCaml Oasis

OCaml Oasis is a configure/build/install system for OCaml proget (like
Cabal for Haskell).

This commit also add a few small dependencies that where missing

  -  OCaml Data Notation (odn)
  -  ocamlify
  -  ocamlmod
Update OCaml react to version 2.4.3
Update OCaml ExtLib to version 1.6.1
zsh: don't clobber the environment of non-login shells
Follow renaming of services.xserver.videoDrivers to services.mesa.videoDrivers for VirtualBox Guest
add normal theme support for slim and slimlock
Add "vboxsf" to the kernel modules for VirtualBox Guest Additions 4.3.6
systemd: add optional python support