[issue21922] PyLong: use GMP

[Hristo Venev]

Hristo Venev added the comment:

After some minor optimizations my implementation is about 1.8% slower on pystone and about 4% slower on bm_nqueens. It's 4 times faster on bm_pidigits.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21922>
_______________________________________