ref: 8f2e408448c2c2d16173f244448b8b9a1fcaf6d7
parent: 2dec35524e1c9205656ef0167f5d7486a3a34302
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Tue Aug 25 16:20:25 EDT 2015
libmp: add mpnrand() function to generate uniform random number 0 ≤ x < n