[issue22824] Update reprlib to use set literals

[Berker Peksag]

Berker Peksag added the comment:

Thanks for the review, Raymond. Patch updated:

- Updated the documentation
- Added two test cases for set literals
- Replaced old run_unittest calls with ``unittest.main()``

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Added file: http://bugs.python.org/file37164/issue22824_v2.diff

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