can use standard math.random as well as true RNG?

[trent]

some people desire to have a seeded-random number generator on crow. it already exists in the codebase, but we overwrite math.random with the interface to the TRNG.

all we'd need to do is:

math.srandom = math.random
math.srandomseed = math.randomseed
-- then overwrite math.random with new fn

is math.srandom the correct name to use? should it be seededrandom?

[trent]

fixed by #442