[issue5529] Backport sys module docs involving import to 2.7

[Brett Cannon]

Brett Cannon <brett at python.org> added the comment:

Unassigning Georg as he does not need to do this if he doesn't want to.

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assignee: georg.brandl -> 

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5529>
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