Make it compile against Qt6
Add QDebug operator<<(QDebug dbg, const KDQName &qn) because since Qt6 QTest::toString is using debug stream, but operator operator<<(QDebug dbg, const KDQName &qn) is not exported in kdsoap before version 2.1.2
Add QDebug operator<<(QDebug dbg, const KDQName &qn) because since Qt6 QTest::toString is using debug stream, but operator operator<<(QDebug dbg, const KDQName &qn) is not exported in kdsoap before version 2.1.2