Since we have Python 3.3 as a minimum requirement, we don't need to
patch our site.py with copy_sysconfig_files_for_embed() anymore, but we
still need a site.py file on startup. We create it when we collect
stdlib deps.
Removed hscommon's "docs" folder and moved all documentation directly
into docstrings. Then, in dupeGuru's developer documentation, added
autodoc references to relevant modules.
The result is a much more usable hscommon documentation.
