matplotlib: fix build on darwin

* build with clangStdenv
* update to 1.2.1
limnoria: add git as dependency, otherwise build fails
Limnoria: update to 2013-06-01

Old build was hanging when building for python3, see
http://hydra.nixos.org/build/5615679/log/raw
nose: run tests as noted in https://code.google.com/p/python-nose/issues/detail?id=387#c4
Merge pull request #752 from lovek323/matplotlib

matplotlib: fix build on darwin
python-packages.nix: unsubscribe myself from some Hydra mails
Bump disnix,disnixos and dysnomia to latest development versions
nixpkgs-lint: Add support for filtering by maintainer

For instance, you can now say "nixpkgs-lint -m alice" to show only
packages maintained by Alice.

Also added command-line parsing.
Add fs-walk node package + updated other nodejs packages
Make the setup-hook work again now that nodejs modules reside in lib/node_modules
Adding Lush: Lisp Universal SHell
Adding x-cape keyboard mapping helper
Fix unneeded inherit
wine: upgrade to 1.6 + latest gecko/mono extensions
Added forever-monitor nodejs package
nixpkgs-lint: Fix priority check
Fix some name collisions
webkitSVN: Remove

It hasn't been updated in a long time.
Fix a name collision between glibc and glibc217
Fix a name collision between two distinct KDE wallpaper packages