List of changes:
* All individual packages moved to the top-level kde47 namespace.
* Utility functions moved back to kde-package/default.nix
nix-env will not find kde-4.7 modules unless you add something like
'kde4 = pkgs.recurseIntoAttrs pkgs.kde47;' to your packageOverrides.
This is done because kde-4.7.0 on NixOS is not ready yet.
svn path=/nixpkgs/trunk/; revision=28693