py2/py3: use sys.maxsize instead of sys.maxint

!1751 (comment 203735)
8 jobs for zope4py3 in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.CodingStyleTest-Zope4Py3

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failed ERP5.UnitTest-Zope4Py3

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failed ERP5.UnitTest-Zope4Py3-Py2

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failed ERP5.CodingStyleTest-Zope4Py3

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failed ERP5.UnitTest-Zope4Py3

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failed ERP5.UnitTest-Zope4Py3-Py2

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failed ERP5.UnitTest-Zope4Py3-Py2

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failed ERP5.UnitTest-Zope4Py3-Py2

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