[issue1524639] Fix Tkinter Tcl-commands memory-leaks

[Terry J. Reedy]

Changes by Terry J. Reedy <tjreedy at udel.edu>:


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versions: +Python 3.3, Python 3.4 -Python 3.1, Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1524639>
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