Extend the simply functionality by repeating it under the rude
interrupter and chain together a couple of steps in new test cases.
As a compromise for adding more tests, incorporate the piglit subtest
framework.
A few of the tools can be performed post-mortem from a different system,
so it is useful to be able to compile those tools on those foreign
systems. Obviously, any program to interact with the PCI device or talk
to GEM will fail on a non-Intel system.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>