Eddie Muller is in way too good a mood for a man who's known as the Czar of Noir. At every onstage introduction this year, he's been chortling with joy. But he's not alone: the Castro Theatre has been packed out at both of its evening performances of its opening weekend of Muller's Deadline: Noir City, the Seventh Annual San Francisco Film Noir Festival. The capacity crowd, 1400 strong, loudly approved Friday, January 23rd's double bill of Deadline-U.S.A. (1952), starring Humphrey Bogart as