empty now), do more of bashrc.sh declaratively, and moved nsswitch
generation to modules/config/nsswitch.nix.
svn path=/nixos/branches/modular-nixos/; revision=15754
Non-valid modules are commented inside the generated list.
Move module paths which are not the module directory into the legacy.nix file.
svn path=/nixos/branches/modular-nixos/; revision=15751