It is mostly not used (most places in Qt use typename directly), so
is already not very useful.
For example typename is used in:
QDataStream& operator<<(QDataStream& s, const QVector<T>& v)
Change-Id: I85337ad7d8d4ebbb424bfa2ab9a356456ff3e90f
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>