[Development] Merge and Integration status report

[Liang Qi]

Integrations

* qt5 dev integration failed from June 2, a submodule update without qtdeclarative was done on June. 9
* * Issue: https://bugreports.qt.io/browse/QTBUG-68666 declarative_core::MappingManagerError::test_error() failed
* * * https://codereview.qt-project.org/#/c/222768 Simon is working on that since yesterday

* qt5 5.11 integration failed from June 9
* * Issue: https://bugreports.qt.io/browse/QTBUG-68773 qtwayland build failed - can't find some headers
* * * https://codereview.qt-project.org/#/c/232288/ Robert Griebl has a fix, Oswald please help to review it.
* * Issue: https://bugreports.qt.io/browse/QTBUG-68741 tst_QQmlDebuggingEnabler::qmlscene() failed