Update egg2nix to 0.3.
Merge remote-tracking branch 'refs/remotes/origin/master' into chicken-eggs
gifsicle: update from 1.84 to 1.86
libgpgerror: update from 1.16 to 1.17
mkvtoolnix: update from 7.2.0 to 7.3.0
chruby: allow for specifying Rubies to use

This allows the user to specify an attrset of Rubies to use with chruby by
overriding the default of ~/.rubies with a path to a symlink tree.
manpages: update from 3.74 to 3.75
swiProlog: update from 6.6.5 to 6.6.6
logcheck: update from 1.3.16 to 1.3.17
oxygen-gtk3: update from 1.4.0 to 1.4.1
qjackctl: update from 0.3.11 to 0.3.12
enca: update from 1.15 to 1.16
checkstyle: update from 5.8 to 6.0
youtube-dl: update from 2014.10.13 to 2014.10.25
perlPackages.Encode: update from 2.55 to 2.63
Merge pull request #4630 from abbradar/onscripter

add "onscripter-en" package
firefox: Update to 33.0.1
Add nodejs to the small channel

(cherry picked from commit d927ce03e4ad3d65f64eb2ddad970ec08f47fffc)
linux: Update to 3.12.31
Upgrade boto to support eu-central-1 region.