wip/libbrahe 1.2.0 NetBSD

A heterogeneous C library of interesting numeric functions.

This library provides:

* a function for rounding floating point values to a specific number of digits * several pseudo-random number generators, including the Mersenne Twister, various algorithms by Marsaglia, and ISAAC * least common multiple and greatest common denominator functions * a few trigonometry functions for finding the inversions of hyperbolic sine, cosine, and tangent

This library is also used by libevocosm, which is in turn the foundation for Acovea, used to determine optimal compiler optimizations.