We integrate dEQP as a console application and a shared library which
runs all of the test logic. Using a shared library lets us compile
dEQP with all the specific compiler options it needs, without
conflicting with the compile settings in ANGLE proper.

Currently we only support Windows D3D11, ES 2 and 3. We can add
other targets in the future.

We also have a few bugs preventing us from running the test suite in
full. We run into infinite loop problems in some shader tests, and
have crashes or UNIMPLEMENTED in others.

BUG=angleproject:901

Change-Id: Ib6fe66041a6fe547eb2cba497c52de7fd080d667
Reviewed-on: https://chromium-review.googlesource.com/238084Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>