International Music Industry Group Launches Piracy Suits By JANE WARDELL    LONDON (AP) -- The international record industry escalated its fight against music piracy Thursday, announcing that it will file hundreds of lawsuits across Europe against individuals and groups it accuses of illegally sharing music through the Internet.    The International Federation of the Phonographic Industry, representing record companies tired of losing millions of dollars in revenue, said its affiliates are filing 459 lawsuits in Britain, France, Germany, Denmark, Italy and Austria...