Changes 5.1.2:
* 5.1.1 install fails if the bsddb in the standard library is not installed,
  under Python 2.7.
* Since 5.0.0, we can't find 4.x libraries unless we specify a
  "--berkeley-db=/path/to/bsddb" option.
* Support "DB_ENV->get_open_flags()", "DB_ENV->set_intermediate_dir_mode()",
  "DB_ENV->get_intermediate_dir_mode()".
* Support "DB->get_dbname()", "DB->get_open_flags()".
* Support "db_full_version()".
* Document "version()". This top-level function has been supported forever.
* Bugfix when calling "DB->get_size()" on a zero length record.
* 'assertEquals()' is deprecated in Python 3.2.
* 'assert_()' is deprecated in Python 3.2.
* Solved 'ResourceWarning' under Python 3.2.

(adam)