Romeo and Juliet and Much Ado About Nothing by William Shakespeare, in repertory at the Gamm Theatre, Pawtucket, Rhode Island, November 25 through December 5, 2009. Reviewed by Caldwell Titcomb To celebrate the start of its 25th season, the Gamm Theatre in Pawtucket, Rhode Island, is offering two Shakespeare plays in repertory: “Romeo and Juliet”…