CreateDeviceFromD3D implementations, device QI tests and some other patches.

[Stefan Dösinger]

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Am 2015-08-20 um 10:42 schrieb Stefan Dösinger:
> I don't think you need the NULL assignment here, 
> d3ddevice::queryinterface does it for you in all error paths.
Just to clarify: Setting *obj = NULL if the requested interface isn't
supported is documented QueryInterface behavior[1]. Some interfaces
beg to differ, but IDirect3DDevice* works according to the spec.

1:
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682521(v=vs.85).aspx
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