[dev-qt/qtcore] Revision bump adds upstream patch to unbreak cmake qt5 builds.

Package-Manager: portage-2.2.7
Update Qt5 sets.
[dev-qt/qtgui:5] Pin libxcb dep to 1.9.1 until API/ABI issue is resolved.

Thanks to johu for reporting.

Upstream bug: https://bugreports.qt-project.org/browse/QTBUG-34748

Package-Manager: portage-2.2.7
Merge branch 'master' into docs