[issue9796] Add summary tables for unittest API

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

I committed the patch in r86141 and a few other fixes in r86142 and r86143. There are still more things I want to fix before I backport all the patches to 3.1 and 2.7 and close the issue.

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stage: needs patch -> commit review

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<http://bugs.python.org/issue9796>
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