Fixed Blake2B
Fixed Blake2B

- Blake2B crashed because it generated an 64 byte Output. We moved it to
uint 64bytes, so it works now.
- Blake2B works in theory now, but must be tested to make sure if it
works in the blockchain together with existing ASIC Blake2B Miners.

globaltoken/globaltoken,globaltoken/globaltoken,globaltoken/globaltoken,globaltoken/globaltoken,globaltoken/globaltoken,globaltoken/globaltoken