* This includes some support for the new serialised-root signature
representation for precompilation which also affects runtime.
GetRootSignature*() functions in pipeline state and state object are not
implemented as it's unclear if they are supported.
* The interfaces for the precompilation are *not* supported as there is no need.
* Where available - on Win8+ basically. On win7 the video doesn't play (but most
of the demo also doesn't work, so that's not much change).
* Added a short 10kb clip from Caminandes (http://www.caminandes.com/sharing)
* Built entirely independently of the main renderdoc build (for now).
* Contains python scripts & framework for running tests on a renderdoc build,
which will be run nightly.