virtualbox: Fix permissions for /dev/vboxdrvu

See https://bugs.archlinux.org/task/38314 and https://www.virtualbox.org/browser/vbox/trunk/src/VBox/Installer/linux/installer-common.sh?rev=47894#L28
Add ZNC module. Has zncConfOptions or specify full conf file.
Add `NIX_MYENV_NAME` environment variable in `myEnvFun`
Adds easy-format
use wrapper to set LUA_PATH variable
Allow search of updates for atop
Allow auto-updating of the AnonymousPro font
Update afflib
Add fresh (unstable) Allegro 5, too
Allow autoupdates for altermime
Update angelscript
Update atanks
Update Box2D to 2.3.0. I fail to build 2.3.1, though.
Add an auto-update script for atanks
Update Linux 3.15 to 3.15.3
added lua-filesystem-1.6.2
Tweak
Fix evaluation
include share directory
Added pipes-csv and pipes-http