[MacPorts] #60631: scidavis: Update to 2.3.0

[MacPorts]

#60631: scidavis: Update to 2.3.0
-------------------------+-------------------------
  Reporter:  ryandesign  |      Owner:  NicosPavlov
      Type:  update      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  scidavis    |
-------------------------+-------------------------

Comment (by NicosPavlov):

 Some notes about SciDAVis 2.3.0:

 This version dropped support for qt4, meaning that it has to be built
 based on qt5. However, it still relies on qwt5 API, while qwt5 is not
 compatible with qt5 (support was added in qwt6). Furthermore, it also
 relies on qwtplot3d, which does not officially support qt5, although it
 seems to build with it.

 It is therefore not clear how to build scidavis 2.3.0, as some dependences
 still require qt4.

-- 
Ticket URL: <https://trac.macports.org/ticket/60631#comment:2>
MacPorts <https://www.macports.org/>
Ports system for macOS