mxe/mxe — pull request #448 by nandub (2014-08-06 08:39:37+00:00)
Title: add primesieve library

From http://primesieve.org/ website:
```
primesieve is a free (BSD-licensed) software program and C/C++ library that generates primes
using a highlyoptimized sieve of Eratosthenes implementation. It generates the primes below
10^9 in just 0.2 seconds on a single core of an Intel Core i7-4770 3.4GHz CPU from 2013.
primesieve can generate primes and prime k-tuplets up to 2^64.
```