Import of SISYPHUS/Math-MPFR-3.23 from CPAN.

gitpan-cpan-distribution: Math-MPFR
gitpan-cpan-version:      3.23
gitpan-cpan-path:         SISYPHUS/Math-MPFR-3.23.tar.gz
gitpan-cpan-author:       SISYPHUS
gitpan-cpan-maturity:     released