Support Scrypt and Qubit

[shtse8]

Scrypt and Qubit are most common in cryptocurrency. I suggest we should support these.

[DonaldTsang]

If you want the whole lot try looking at https://github.com/nicehash/cpuminer-multi#algorithms

[DonaldTsang]

Also if you really want to push the envelope then include some of the key expansions like https://github.com/bsdphk/PHC (there are some that got into the honorable mentions)