[MacPorts] #64518: Use Qt5 LTS compilation patches git repository from KDE

[MacPorts]

#64518: Use Qt5 LTS compilation patches git repository from KDE
--------------------------+---------------------------------
  Reporter:  cgilles      |      Owner:  MarcusCalhoun-Lopez
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  qt5          |
--------------------------+---------------------------------

Comment (by chrstphrchvz):

 I asked about using the KDE patch collection a couple of times, but the
 only response was that doing so would be up to whoever is interested:
 [https://lists.macports.org/pipermail/macports-
 dev/2021-October/043826.html], [https://github.com/macports/macports-
 ports/pull/12711#issuecomment-958162641]. And from my experience updating
 qt5-qtwebengine to newer releases, I’ve found that the current structure
 of qt5 portfile doesn’t easily accommodate using sources other than the
 official tarballs. The 5.15.3 sources are now publicly available, so maybe
 those can be used in the meantime.

-- 
Ticket URL: <https://trac.macports.org/ticket/64518#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS