[docs] [issue17375] Add docstrings to methods in the threading module

[Raymond Hettinger]

Raymond Hettinger added the comment:

> You didn't specify the contributor in the commit.

I'm the contributor.  

> Also, you've only committed this to 2.7; why?
I committed to 2.7 because the 2.7 docs were the source.  
When I get the time, I will build a 3.x version of the update.

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<http://bugs.python.org/issue17375>
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