ATTENTION! OpenCL kernel self-test failed.

[slawson]

Windows 10
Dual AMD R9-290x
AMD Driver 8/16/19 26.20.12028.2

I have tested and verified that the following beta versions work correctly with -m2500.

5.1.0+1394
5.1.0+1403
5.1.0+1523

As an added bonus, I seem to be squeezing about 10-20 more kH/s with +1523.