version check to mention that we support versions 3.2 - 4.2.

is a partial version of the 1.18->1.19 patch.  i left out the ability for
the module to also load as _pybsddb in addition to _bsddb as that applies
more to pybsddb than python.

Creates a url that should always be invalid.

if configured --without-threads.

Will backport to 2.3.

* Reference the doctest.DocTestSuite() conversion tool.

Add support for iterators and other mapping methods.
Convert tests to unittest format and expand their coverage.

hashing a class that does not define __hash__ but does define a
comparison.

Noted that the SHA algorithm is really SHA-1.
(Contributed by Ronald Rivest.)

- cleaned up some markup

The documentation severely departed for the actual implementation.