[MacPorts] #59358: Add python2_qstring.diff debian patch to py-qtpy5 in order to fix pymol crashes under python27 and py27-pyqt5

[MacPorts]

#59358: Add python2_qstring.diff debian patch to py-qtpy5 in order to fix pymol
crashes under python27 and py27-pyqt5
------------------------+--------------------
  Reporter:  jwhowarth  |      Owner:  (none)
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  py-qt5     |
------------------------+--------------------

Comment (by jwhowarth):

 Confirmed the fix under Xcode 11.1 under Catalina by installing the
 proposed packaging and running 'pymol'.

-- 
Ticket URL: <https://trac.macports.org/ticket/59358#comment:1>
MacPorts <https://www.macports.org/>
Ports system for macOS