Added trousers, tpm-tools, and tboot.

Added lcp_writepol -Z option.
Added tpm-quote-tools for remote attestation.
Don't let rngd read /dev/tpm0.

Only one process can interact with the TPM module and
that process should be tcsd.  The tpm_rng kernel module
should instead be loaded and /dev/hwrnd be used to
read the TPM random generator.
Also, log which random generator devices are used by
rngd on startup.
Added TCSD (Trusted Computing Group Software Stack (TSS) daemon).

Start tcsd after systemd-udev-settle and run it in foreground.
Add types to tcsd config options.
Only disable TPM access by rngd when tcsd is enabled.
Added meta information and maintainer for trusted computing pkgs.
Changed trousers license from cpl to cpl10.
More helpful message when refusing to evaluate "broken" package

A "broken" package is one where either "meta.broken = true" or build
platform != meta.platforms.
Factor out allowUnfree,allowBroken help message

DRY.
add sip-4.16.1
add pyqt5
add libuv package

This adds multiple versions of libuv: "a multi-platform support library with a
focus on asynchronous I/O."

The latest 0.10.* versions are considered stable (and thus I've only included
0.10.27), while the 0.11.* versions are unstable and often break API
compatibility (and thus I've included multiple version thereof).

Versions >= 0.11.1 && <= 0.11.5 do not create shared libraries, so I've
excluded them.

This should help clean up some of our other packages that depend on libuv (e.g.
rust, nodejs) where we currently use whatever version is included in the
package's archive.
glmark2: Add glmark2 2014.03
enblend-enfuse: update to version 4.1.3
hugin: update to version 2013.0.0
Add maintainer and platforms
mesos: Add package

Apache Mesos is a cluster manager that simplifies the complexity of running
applications on a shared pool of servers.
lib/licenses.nix: convert to spdx.org shortnames

Done where possible, replacing links to point to spdx.org (probably stabler).
Also make libtiff use its dedicated license.
lib/licenses.nix: improve sortedness