The history of this project is long and complicated, and so are
their copyrights and licenses. I (Jesus Cea) write this document
in orden to clarify the situation.

This code was integrated once in Python 2.x, so I guess somebody
did the paperwork related to contributor agreement. This code is
derived from that version, so that could be a license
checkpoint/blank sheet. I must verify that.

New files will be covered by the 3-clause BSD license.

License of Python files:

    * Except the following files, license is 3-clause BSD license.
      Jesus Cea Avion.

    * test2.py, test3.py: Zope Public License, version 2.0.
      Zope Corporation and contributors.

    * Lib*/bsddb/dbrecio.py:
      Itamar Shtull-Trauring <itamar@maxnm.com>.

    * Lib*/bsddb/__init__.py: 3-clause BSD license.
      Digital Creations and Andrew Kuchling.

    * Lib*/bsddb/db.py: 3-clause BSD license.
      Digital Creations and Andrew Kuchling.

    * Lib*/bsddb/dbobj.py, dbutils.py: Free software.
      Autonomous Zone Industries, Gregory P. Smith.

    * Lib*/bsddb/dbtables.py: Free software.
      Autonomous Zone Industries, Gregory P. Smith.

    * Lib*/bsddb/test/test_dbtables.py: Free software.
      Autonomous Zone Industries, Gregory P. Smith.

    * Lib*/bsddb/dbshelve.py: Free software.
      Total Control Software.

License of C files:

    * Modules/bsddb.h, _bsddb.c: 3-clause BSD license.
      Digital Creations, Andrew Kuchling, Robin Dunn,
      Gregory P. Smith, Duncan Grisby, Jesus Cea Avion.

NOTE: If this file is changed, "docs/license.rst" must be updated too.