UPDATE v1160 and new miner:

- added miner ccminer-alexis78-v1.0-cuda8 (mostlu used for x17)
- added xmr-stak-v2.4.2-cuda8
- added xmrig-amd-v2.6.0-beta1
- added xmrig-nvidia-v2.6.0-beta1
- more miners to parsing speed script
- small change in miner download script