that need installing. The script is made so that it also can be run from
source (or installed system-wide).
+ 1. Only set one value in setup.py (PACKAGE_NAME), rest is automatic
+ 2. Metadata only defined in one place (lib/<PACKAGE_NAME>/__init__.py)
+ 3. Known-good module documentation (PYTHONPATH=lib pydoc <PACKAGE_NAME>)
+ 4. Runnable from a source checkout or from system-wide installation