Sgminer algorithm updates
Inspired by @mkirov0 work with the ccminers I tried crossing the algorithms between the different Sgminer variants.

 
![2018-05-16 10_53_00-192 168 1 33 - remote desktop connection](https://user-images.githubusercontent.com/7012032/40128492-5d3cf3ec-58f7-11e8-9eda-5e8f6288ccca.jpg)


For example sgminer is faster at lyra2z then sgminerLyra2z, and sgminerLyra2z is the fastest at Yescrypt

This was tested on my dev system with 2 RX580's and left default PTR 1 setting
