Issue 18532: Added tests and documentation to formally specify the .name attribute on hashlib objects.
Issue #18659: fix test_format test that wasn't being executed.  Thanks Vajrasky Kok for the patch.
Issue #18659: Backed out changeset cfd875bcbe41 after buildbot failures.
Issue #18661: typo in grp.struct_group docstring.  Thanks Vajrasky Kok.
Issue #18661: typo in grp.struct_group docstring (fix merged from 3.3).  Thanks Vajrasky Kok.
* Fix the assertions in hashlib to use unittest assertion methods instead of
  evil assert statements.
* Add an additional assert to the new test_name_attribute test that actually
  confirms that a hash created using each h.name results in a new hash sharing
  the same name.
Issue #4885: Add weakref support to mmap objects.  Patch by Valerie Lambert.
Issue #17934: Add a clear() method to frame objects, to help clean up expensive details (local variables) and break reference cycles.
Followup to 862ab99ab570: I forgot to add the magnificent test_frame.py.