[dev-qt/qtgui:4] Raise minimum deps to ensure correct multilib USE deps.

Package-Manager: portage-2.2.12-r1
[dev-qt/qtopengl:4] Raise minimum deps to ensure correct multilib USE deps.

Package-Manager: portage-2.2.12-r1
[dev-qt/qtsvg:4] Raise minimum deps to ensure correct multilib USE deps.

Package-Manager: portage-2.2.12-r1