[PATCH] [libc++] Refactor test components into modules.

[Eric Fiselier]

Just a nit, could we give the python module a more descriptive name than `test`? This change will make it possible to share libc++'s configuration and format with libc++abi. When using it in libc++abi the name `test` will be quite vague.

I'm also not sure I like the libcxx root being a python module. What is the benefit of that?

Also I would introduce a `.gitignore` into the top of libc++ so git users don't see the generated .pyc files.


http://reviews.llvm.org/D6881

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