Add DirectCompute ShaderModel 5 support
DirectCompute ShaderModel 5 offers several performance improvements over ShaderModel 4. Add ShaderModel 5 support to increase the mining rate of Bitcoin Miner.
Bitcoin Miner release 4 is now live w/ Shader Model 5 support! Users with DirectX 11 capable systems should see a 10-15% performance boost over release 3. Thanks everyone for your support and feedback!