rabbitmq-server: update to 3.2.1
rabbitmq-c: add version 0.4.1
libjson-rpc-cpp: minor fixes to the expression.
pythonPackages.tarsnapper: New expression
Re-generate some Haskell expressions with cabal2nix.
add ibus
pianobooster: patch to build with gcc4.7, wrap it so it finds libGL.so.1

Also add linux as a platform.

Patches from:
https://github.com/gbin/gbin-overlay/tree/master/media-sound/pianobooster
Merge pull request #1588 from ocharles/pythonPackages.tarsnapper

pythonPackages.tarsnapper: New expression
photivo: Update.
photivo: Fix paths.
libreoffice: Fix path to the JDK
youtubeDL: update from 2014.01.20 to 2014.01.23.1
pspp: update from 0.8.1 to 0.8.2
popa3d: update from 1.0.2 to 1.0.3
lxc: update from 1.0.0.beta1 to 1.0.0.beta2
apparmor: build with bison 2.x; version 3.x causes compiler errors
popa3d: disown this package
wayland: update 1.3.0 -> 1.4.0
gtk3: bugfix update 3.10.5 -> .6
harfbuzz: update from 0.9.24 to 0.9.25

I see no significant change in the changelog.

(cherry picked from commit 29a878d1be84b2a15a928de93090b9edb067ac95)