- Install the Python module `ansible` into the usual prefix, but use
`python.private_site_packages` (in `libexec`) for the deps.
- In oder for the `ansible` module to be useful, the deps are needed
and we insert the `python.private_site_packages` in the
`ansible/__init__.py` as a `sitedir`, to the `egg`s are working.
- Rewrote the `bin_wrapper` to be ready to be moved into
`python_helper` or something.
- With the brand new changes in the PythonInstalled dependency,
it is not necessary to set the `PYTHONPATH` if you want to use
the `python.private_site_packages` inside of the `libexec`.
However, you have to put the calls to `system python` inside of
a `python do … end` block (technical limitation of supporting
Python 2.x and 3.x in general).
