ENYOKENI PALACE, South Africa (Reuters) - Thousands of bare-breasted Zulu girls paraded outside the palace of their king as part of an ancient wife-choosing ceremony this weekend, and were told to stay virgins to keep them safe from AIDS.The Royal Reed Dance was once a chance for the head of South Africa's largest tribe to pick new wives from his assembled subjects, but lately King Goodwill Zwelithini has used the occasion to address his subjects on morality and development.His shoulders draped with the skin of a leopard, Zwelithini called on around 2,000 Zulu maidens on Saturday to abstain from pre-marital...