[issue27239] Make idlelib.macosx self-contained.

[Roundup Robot]

Roundup Robot added the comment:

New changeset cc7f63b6847e by Terry Jan Reedy in branch 'default':
Issue #27239: idlelib.macosx.isXyzTk functions initialize as needed.
https://hg.python.org/cpython/rev/cc7f63b6847e

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27239>
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