Add simple state-based functions to og.
Add simple state-based functions to og.

Useful for pure random generation that doesn't need to be
cryptographic....

juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff,juped/archaeology-cutoff