[issue14386] Expose dictproxy as a public type

[STINNER Victor]

STINNER Victor <victor.stinner at gmail.com> added the comment:

Oh, collections.abc contains also the mappingview type exposed with the name "dict_proxy":
dict_proxy = type(type.__dict__)

It was exposed as _abcoll.dict_proxy in Python 3.2.

It is not documented. Should we keep it for backward compatibility, or can it be removed? _abcoll was a private module and I didn't find dict_proxy in Python 3.2 doc.

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