[issue8574] transient_internet() (test_support): use socket.setdefaulttimeout() and test_robotparser failure

[STINNER Victor]

Changes by STINNER Victor <victor.stinner at haypocalc.com>:


Removed file: http://bugs.python.org/file17136/transient_internet-2.patch

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<http://bugs.python.org/issue8574>
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