Add Ubuntu patchset for dev-qt/qtgui:5 to catch backports from higher versions
Adjust dev-qt/qtgui depends for qtwidgets,qtprintsupport and qtopengl so that they may use the Ubuntu patched version of dev-qt/qtgui
Adjust dev-qt/qtgui depends for dev-python/PyQt5,qttest and qtx11extras so that they may use the Ubuntu patched version of dev-qt/qtgui
Version bumps