[issue22636] avoid using a shell in ctypes.util: replace os.popen with subprocess

[Martin Panter]

Martin Panter added the comment:

Updated Py 2 patch to handle OSError when shell=True is not used

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Added file: http://bugs.python.org/file43387/ctypes_util_popen-6.py2.patch

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<http://bugs.python.org/issue22636>
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