locate service: allow customisation

Fixes #2961
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
fix openjdk url for Darwin
Add ZNC module. Has zncConfOptions or specify full conf file.
Add `NIX_MYENV_NAME` environment variable in `myEnvFun`
Adds easy-format
added luaexpat 1.3.0
use wrapper to set LUA_PATH variable
Fixed dwb startup issue
makeself: bump to 2.2.0
vte: store patch in repo, source offline
nc-indicators 0.1 -> 0.2
add python-discid, a binding of libdiscid by MusicBrainz
iomelt: new package

This adds the IOMelt pacakge, "a simple yet effective way to benchmark disk IO
in Linux systems."
Merge pull request #3149 from iyzsong/python-discid

add python-discid, a binding of libdiscid by MusicBrainz
Merge pull request #3145 from nilcons/nc-indicators-update

nc-indicators 0.1 -> 0.2
Merge pull request #3144 from wmertens/source-missing-fixes

Source missing fixes
Merge pull request #3142 from pSub/dwb-dconf-issue

Fixed dwb startup issue
Merge pull request #3141 from cstrahan/iomelt

iomelt: new package
Create some meta for the AnonymousPro font