[issue11509] fileinput module unit test coverage improvements

[Denver Coneybeare]

Changes by Denver Coneybeare <denver.coneybeare at gmail.com>:


Added file: http://bugs.python.org/file21149/fileinput_unittests_v7.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11509>
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