[issue12301] Use :role:`sys.thing` instead of ``sys.thing`` throughout

[Éric Araujo]

Éric Araujo added the comment:

Inclined to reject this, given the general dislike of huge low-value patches.

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keywords:  -easy
status: open -> pending
versions:  -Python 2.7, Python 3.2, Python 3.3, Python 3.4

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<https://bugs.python.org/issue12301>
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