Rock-Tenn Company and MeadWestvaco Corporation (MWV) announced that shareholders of RockTenn and stockholders of MWV overwhelmingly approved the proposed combination of the two packaging companies into WestRock Company at their respective special meetings.   At the RockTenn special meeting, more than 97% of the shares voted “FOR” the proposal to approve the business combination agreement, representing approximately 80% of the total shares outstanding as of the record date.   At the MWV speci...