He may be faster than a speeding bullet , but even Superman can’t outrun globalization. Back in the summer of 1976, one of my treasures was an oversize special edition comic book, “Superman Salutes the Bicentennial.” Reprinting a famous cover of the 1940s, with a bald eagle perched on Superman’s arm and a stars-and-stripes shield behind him, the publication contained six historical tales of the Revolution and the Spirit of ’76. Today, a search of DC Comics ’ website shows nothing celebrating