forked from qt-creator/qt-creator
QT_USE_FAST_CONCATENATION doesn't do anything nowadays. Using QT_USE_QSTRINGBUILDER is the same as QT_USE_FAST_OPERATOR_PLUS for QStrings and enables more QStringBuilder use for QByteArrays. Change-Id: Ibd297817c50d86661d47822799f989447249af1b Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>