[issue6157] Tkinter.Text: changes for bbox, debug, and edit methods.

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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dependencies: +Add tkinter basic options tests
versions:  -Python 2.7, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6157>
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