Charges of anti-Semitism are standard fare when it comes to "The Merchant of Venice," but a new film adaptation of Shakespeare's play also raises another controversial question -- was the merchant gay? An emotionally charged kiss between two men raises the issue of their sexual orientation, but even the actors who play them do not agree about what the kiss means. The film, which opened nationally Wednesday, is based on Shakespeare's play about the merchant Antonio, whose friend Bassanio is deeply in debt and needs money to woo an heiress named Portia. To help his friend, Antonio borrows money from...