[Piglit] Building current piglit on ubuntu 12.04?

[Dan Kegel]

Is there an up to date recipe for how to build and run current piglit
on ubuntu 12.04?

For another month or two, I need to support Ubuntu 12.04.
I tried building current piglit on it, but there was much pain
(partly because of python3), so I resorted to just running the
relatively ancient 1.0.0~git20140426.5702e43~edgers~ubuntu12.04.1
from https://launchpad.net/~xorg-edgers/+archive/ubuntu/piglit
(which suffers from
https://bugs.launchpad.net/plainbox-provider-checkbox/+bug/1400769 )
It's good enough to expose problems... crashed the machine on
the first run.  Last line recorded by buildbot was:
[01708/16718] crash: 23, fail: 403, pass: 971, skip: 310, warn: 1
Running Test(s): 01708 ... 01724
This is with Ubuntu 12.04.5 LTS,
OpenGL renderer string: Quadro NVS 295/PCIe/SSE2
OpenGL version string: 3.3.0 NVIDIA 340.96
and I'll probably be trying newer kernel + driver soon.
And maybe a beefier graphics card, this was just what was laying
around in the bin.

ubuntu 16.04 can easily run current piglit and is much less painful,
as you can imagine, but still fails a lot of tests.