By Bill Buell Gazette Reporter Portraying Lorraine Barrie in Christopher Luscombe’s adaptation of Noel Coward’s “Star Quality” is giving Jean T. Carney the opportunity to play a couple of different character types. “I get to play somebody who is mercurial, who changes from being charming to someone who changes her tack to get exactly what she wants,” said Carney, a Glenville native who has been a steady presence for the Schenectady Civic Players both on stage and behind the curtain since 2009.