python-smmap has a dependency on the base Python install. Explicitly
adding the python package as a dependency slipped through the cracks
initially because, as a Python library, there are very few use cases
where one would attempt to install smmap without already having the base
language.
The calling of `post_install()` is moved above the python3 subpackage in
the source to be more consistent with other Python packages.
Added `vlicense` to the python3 subpackage.