TravisCI: force brew link for Qt & ccache
TravisCI: force brew link for Qt & ccache

ZiminGrigory/qreal,ZiminGrigory/qreal,ZiminGrigory/qreal,qreal/qreal,ZiminGrigory/qreal,qreal/qreal,qreal/qreal,qreal/qreal,qreal/qreal,qreal/qreal,ZiminGrigory/qreal,ZiminGrigory/qreal,ZiminGrigory/qreal,qreal/qreal,qreal/qreal,ZiminGrigory/qreal,qreal/qreal,ZiminGrigory/qreal