[issue1818] Add named tuple reader to CSV module

[Skip Montanaro]

Skip Montanaro <skip at pobox.com> added the comment:

I retract my previous comment.  I don't use the DictReader the way it
operates (fieldnames==None => first row is a header) and forgot about
that behavior.

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message_count: 25.0 -> 26.0

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1818>
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