mpd: update to latest version
yandex-disk: add the Yandex.Disk cloud storage client

Details:
http://help.yandex.com/disk/cli-clients.xml
openbox: Update to 3.5.2
haskellPackages.digits: New expression
Add a nix module for AMD Hybrid Graphics
ttmkfdir: update URL (close #1244)
linux: Update to 3.11.8 (close #1243)
Merge pull request #1251 from wkennington/amd

Add a nix module for AMD Hybrid Graphics
texlive: update to latest version
Upgrade Django Versions

This patch pushes django 1.4.1 -> 1.4.10 and adds django 1.5.5 and
django 1.6. Additionally, it creates the default django package which
always points to the latest version.
Merge pull request #1258 from wkennington/django

Upgrade Django Versions
Merge pull request #1254 from lovek323/texlive

texlive: update to latest version
Merge pull request #1245 from nathanielbaxter/dev/openbox

openbox: Update to 3.5.2
Merge pull request #1239 from grwlf/yandex-disk

yandex-disk: add the Yandex.Disk cloud storage client
Merge pull request #1234 from lovek323/mpd

mpd: update to latest version
Update xonotic to 0.7.
Add scheme48 1.9.
haskellPackages.socketActivation: New expression
haskellPackages.quickcheckInstances: New expression
Merge pull request #1247 from ocharles/digits

haskellPackages.digits: New expression
Merge pull request #1259 from ocharles/haskell

haskellPackages.socketActivation and haskellPackages.quickcheckInstances