It's time for another weekly visit with our peripatetic theater critic, J. Wynn Rousuck, who joins Tom today with reviews of not one but two theater-season openers here in Baltimore.The first is the new production at Baltimore's Center Stage of Tennessee Williams' sultry American classic, Cat on a Hot Tin Roof. This searing drama about multi-generational family ties and unsustainable deceptions unfolds over the course of a sweltering summer night, in the mansion house of a sprawling Mississippi