[pkg-xtuple-maintainers] Bug#872796: postbooks FTBFS with Qt 5.9

[Adrian Bunk]

Source: postbooks
Version: 4.10.1-1
Severity: serious

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/postbooks.html

...
qtsetup.cpp: In function 'void setupQt(QScriptEngine*)':
qtsetup.cpp:917:69: error: 'WindowOkButtonHint' is not a member of 'Qt'
   widget.setProperty("WindowOkButtonHint", QScriptValue(engine, Qt::WindowOkButtonHint), QScriptValue::ReadOnly | QScriptValue::Undeletable);
                                                                     ^~~~~~~~~~~~~~~~~~
qtsetup.cpp:917:69: note: suggested alternative: 'WindowCloseButtonHint'
   widget.setProperty("WindowOkButtonHint", QScriptValue(engine, Qt::WindowOkButtonHint), QScriptValue::ReadOnly | QScriptValue::Undeletable);
                                                                     ^~~~~~~~~~~~~~~~~~
                                                                     WindowCloseButtonHint
qtsetup.cpp:918:73: error: 'WindowCancelButtonHint' is not a member of 'Qt'
   widget.setProperty("WindowCancelButtonHint", QScriptValue(engine, Qt::WindowCancelButtonHint), QScriptValue::ReadOnly | QScriptValue::Undeletable);
                                                                         ^~~~~~~~~~~~~~~~~~~~~~
qtsetup.cpp:918:73: note: suggested alternative: 'WindowCloseButtonHint'
   widget.setProperty("WindowCancelButtonHint", QScriptValue(engine, Qt::WindowCancelButtonHint), QScriptValue::ReadOnly | QScriptValue::Undeletable);
                                                                         ^~~~~~~~~~~~~~~~~~~~~~
                                                                         WindowCloseButtonHint
...