Build fails on qt5-5.15.0

[LiohMoeller]

[CMakeOutput.log](https://github.com/FedoraQt/adwaita-qt/files/4718862/CMakeOutput.log)
[CMakeOutput.log](https://github.com/FedoraQt/adwaita-qt/files/4718868/CMakeOutput.log)


CMake Error at /usr/lib64/cmake/Qt5Gui/Qt5Gui_QGtk2ThemePlugin.cmake:4 (_populate_Gui_plugin_properties):
  _populate_Gui_plugin_properties Macro invoked with incorrect arguments for
  macro named: _populate_Gui_plugin_properties
Call Stack (most recent call first):
  /usr/lib64/cmake/Qt5Gui/Qt5GuiConfig.cmake:248 (include)
  CMakeLists.txt:14 (find_package)


CMake Error at /usr/lib64/cmake/Qt5Widgets/Qt5Widgets_QBB10StylePlugin.cmake:4 (_populate_Widgets_plugin_properties):
  _populate_Widgets_plugin_properties Macro invoked with incorrect arguments
  for macro named: _populate_Widgets_plugin_properties
Call Stack (most recent call first):
  /usr/lib64/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:248 (include)
  CMakeLists.txt:15 (find_package)


CMake Error at /usr/lib64/cmake/Qt5Widgets/Qt5Widgets_QCleanlooksStylePlugin.cmake:4 (_populate_Widgets_plugin_properties):
  _populate_Widgets_plugin_properties Macro invoked with incorrect arguments
  for macro named: _populate_Widgets_plugin_properties
Call Stack (most recent call first):
  /usr/lib64/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:248 (include)
  CMakeLists.txt:15 (find_package)


CMake Error at /usr/lib64/cmake/Qt5Widgets/Qt5Widgets_QGtk2StylePlugin.cmake:4 (_populate_Widgets_plugin_properties):
  _populate_Widgets_plugin_properties Macro invoked with incorrect arguments
  for macro named: _populate_Widgets_plugin_properties
Call Stack (most recent call first):
  /usr/lib64/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:248 (include)
  CMakeLists.txt:15 (find_package)


CMake Error at /usr/lib64/cmake/Qt5Widgets/Qt5Widgets_QMotifStylePlugin.cmake:4 (_populate_Widgets_plugin_properties):
  _populate_Widgets_plugin_properties Macro invoked with incorrect arguments
  for macro named: _populate_Widgets_plugin_properties
Call Stack (most recent call first):
  /usr/lib64/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:248 (include)
  CMakeLists.txt:15 (find_package)


CMake Error at /usr/lib64/cmake/Qt5Widgets/Qt5Widgets_QPlastiqueStylePlugin.cmake:4 (_populate_Widgets_plugin_properties):
  _populate_Widgets_plugin_properties Macro invoked with incorrect arguments
  for macro named: _populate_Widgets_plugin_properties
Call Stack (most recent call first):
  /usr/lib64/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:248 (include)
  CMakeLists.txt:15 (find_package)
[CMakeOutput.log](https://github.com/FedoraQt/adwaita-qt/files/4718857/CMakeOutput.log)

[LiohMoeller]

Incompatibility with qt5-stylesplugin