initial patch by Trent Nelson.

is imported. Instead, ElementTree.parse can look for a special internal method
defined by the accelerator.

This is useful when mucking with import_fresh_module to either force or block
importing of the _elementtree accelerator. These tests in place provide an
immediate indication whether the accelerator was actually imported and overrode
the classes it should have.

Renaming to _Element_Py for clarity and moving it to a more logical location.
_ElementInterface OTOH is unused and is therefore removed.

Close #17988

Also clean up some code around this

Optimize base64.b32encode() and base64.b32decode() (speed up to 3x).

Based on report and patch by Aaron Oakley.

Based on report and patch by Aaron Oakley.

Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of service using certificates with many wildcards (CVE-2013-2099).

Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of service using certificates with many wildcards (CVE-2013-2099).

This caused an exception to be raised later than expected.

This caused an exception to be raised later than expected.

Backed out changeset c4ca39bece9d

Use the cleaner looking @property style for __dict__.
Move _replace() to be just after make() to indicate that
it is a core method on named tuples.