Beta5hp1 Releasse

Changelog:

• Starts to support argon2d.

Tested on Windows 10 and Ubuntu 18.04 & HiveOS with Vega56 and 580 cards. Only x86_64 available for now. You may need to specify "--gpu-platform 1" or so if you have intel CPU or APU. Set "--gpu-threads 2" may help to achieve the best speed. Set "-I 22" or higher may help with better performance. For windows you may also want to set environment variables such as GPU_MAX_ALLOC_PERCENT to 100. If you see error initializing GPU, probably you need to decrease the "-I" number (i.e. intensity). For ethash, currently only works with pools that supports standard stratum protocol.

The pre-built binary kernels are used to speed up the performance, only for Baffin or Ellesmere or Vega cards and if using Linux it's only for AMDGPU Pro driver.

• To use pre-built binary kernels, add parameters as:
  argon2d/ethash: -w 64
  lyra2REv3: -w 256 -I 24
  others: -w 256
• For better performance, add parameters as:
  argon2d: -g 2
  ethash: --xintensity 1024
  lyra2REv3: -I 24
  others: -I 22 or -I 23

Estimated speed:
phi2, rx 580: 3750khs; vega 56: 6750khs
lyra2Z, rx 580: 1950khs; vega 56: 3600khs
allium, rx 580: 4500khs, vega 56: 8200khs
x22i, rx 580: 5200khs, vega 56: 9300khs
lyra2REv3, rx 580: 41mhs, vega56: 64mhs

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