[issue21918] Convert test_tools to directory

[Zachary Ware]

Zachary Ware added the comment:

Here's a new version of the patch in response to review comments.  Patch is in --git format, which means no Rietveld link for this one.

Changes from the first patch:

- Remove Tools/parser/test_unparse.py entirely (moved to Lib/test/test_tools/)
- Remove tearDownClass from the pdeps test
- Fix (remove) test_main from test_unparse
- Add test_md5sum (new since first patch)

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versions:  -Python 2.7
Added file: http://bugs.python.org/file35957/test_tools.v2.diff--git

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21918>
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