[issue33388] Support PEP 566 metadata in dist.py

New submission from Robert Bricheno : PEP 566 added the metadata fields 'Description-Content-Type' and 'Provides-Extra': https://www.python.org/dev/peps/pep-0566/ http://setuptools.readthedocs.io/en/latest/setuptools.html#metadata Currently dist.py in CPython distutils w

[issue33388] Support PEP 566 metadata in dist.py

Change by Robert Bricheno : -- keywords: +patch pull_requests: +6339 stage: -> patch review ___ Python tracker <https://bugs.python.org/issue33388> ___ ___ Py