[issue4926] putenv() accepts names containing '=', return value of unsetenv() not checked

[David Watson]

Changes by David Watson <baikie at users.sourceforge.net>:


Added file: http://bugs.python.org/file18188/putenv-empty-3.x.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4926>
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