It’s a fully packed day with earnings from Apple, the start of a Fed meeting, several other major companies reporting, and more concerns about U.S. relations with China. U.S. stocks had a mixed tone in pre-market trading following a similar pattern in Europe and Asia. A development just after the closing bell yesterday could be a factor, as U.S. prosecutors filed criminal charges against Chinese smartphone maker Huawei Technologies. One thing markets tend to dislike is uncertainty, and this might create even more. Asian markets took some heat Tuesday, and the Chinese government told Reuters the charges were unfair……….