[issue22458] Add fractions benchmark

[Stefan Behnel]

Stefan Behnel added the comment:

I just thought that it might also be nice to have a direct comparison with Decimal, so here's an updated benchmark that has an option "--use-decimal" to run the same code with Decimal instead of Fraction.

Decimal is about 66x faster with Py3.4 on my side (due to the C implementation).

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Added file: http://bugs.python.org/file36685/bm_telco_fractions.py

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