udisks: update from 1.0.4 to 1.0.5
Add claws-mail and libetpan.

Adds Nix expressions for claws-mail (http://www.claws-mail.org) and a
dependency that is not already in the tree, libetpan
(http://www.etpan.org/libetpan.html).

The Claws expression has flags for toggling the build of various plugins.
proot: remove self.stdenv.lib
Merge remote-tracking branch 'nixos/master' into proot

Conflicts:
	pkgs/tools/system/proot/default.nix
memcached: update from 1.4.17 to 1.4.20
lxc: update from 1.0.3 to 1.0.6
libvirt: update from 1.2.7 to 1.2.9
libvirt-glib: update from 0.1.8 to 0.1.9
libyubikey: update from 1.11 to 1.12
popplerQt4: update from 0.26.3 to 0.26.5
poppler_data: update from 0.4.6 to 0.4.7
procps: update from 3.3.9 to 3.3.10
New: gnu datamash
ceph: 0.85 -> 0.86
ceph: Fix Hash
Merge pull request #4417 from flazz/master

New: gnu datamash
nixos/network-interfaces: Bond interface configuration must wait for the bond device service

Also fixes some formatting and removal of slave devices.
epm: update from 4.1 to 4.2
libqb: Add package
libibverbs: Add package