[MacPorts] #37400: py-scipy: Add py33 subport

[MacPorts]

#37400: py-scipy: Add py33 subport
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  Reporter:  g5pw@…    |      Owner:  ram@…
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.1.2
Resolution:            |   Keywords:  haspatch
      Port:  py-scipy  |
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Comment (by ryandesign@…):

 The upstream issue says "Upgrade to Cython >= 0.17.1 fixes the "level >=
 0" issue." We have a py-cython port, but it is not in py-scipy's
 dependency chain. Does installing it fix this problem?

 The archlinux bug report says they fixed it by "fetch[ing] the changes
 from upstream" but they don't say what changes they were.

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Ticket URL: <https://trac.macports.org/ticket/37400#comment:11>
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