mono/mono — pull request #892 by initram (2014-02-08 15:45:35+00:00)
Title: Implemented last remaining function of System.Numerics.BigInteger

Implemented the versions of Parse() and TryParse() that take NumberStyles and IFormatProvider arguments. The implementation is heavily inspired by the implementaion of the same functions for System.Int32.

I have also written some unit tests to cover the functions. More may be needed to fully cover the functionality of the functions.