Log Message:
Update to 6.0.1, update LICENSE:

6.0.1:
  * Clarification of license. Thanks to
    Jan Staněk <jstanek@redhat.com> for bringing this issue up.
    This work is now explicitly licensed under 3-clause BSD license.
  * Fixed a long standing bug (August 2008, rev 9fd52748fa59)
    on "dbtables.py". Notified by Maxime Labelle.
  * If you want to link with Oracle Berkeley DB 6.0, you will
    need to create the environment variable
    'YES_I_HAVE_THE_RIGHT_TO_USE_THIS_BERKELEY_DB_VERSION'
    to signal to the pybsddb that you are legal. To be legal,
    your code MUST be AGPL3 *OR* you have to buy a commercial
    license from Oracle.

    If you are not legally entitled to use Berkeley DB 6.0 and
    you have previous versions of Berkeley DB on your system,
    you can a) delete Berkeley DB 6.0 and try again, OR
    b) instruct pybsddb to use a previous Berkeley DB version,
    using environment variables or command line options.

    Sorry for the inconvenience. I am trying to protect you.

    Some details:

        https://forums.oracle.com/message/11184885
        http://lists.debian.org/debian-legal/2013/07/