NEW YORK (Reuters) - The U.S. government on Thursday added fresh charges to its case against Chinese smartphone maker Huawei Technologies Co that has angered China and hurt U.S.-Chinese diplomatic relations.The superseding indictment, which was filed in the federal court in Brooklyn, New York, charges Huawei with conspiring to violate the Racketeer Influenced and Corrupt Organizations Act (RICO) and to steal trade secrets from six U.S. technology companies in order to grow the company.It also..