NEW YORK (Reuters) – In advance of the widely anticipated trading debut of Alibaba Group Holdings Ltd. , the New York Stock Exchange on Friday said all of its systems are operating normally. In a market status update issued to clients at 7:30 a.m., the exchange said, “Common Customer Gateways (CCGs) are open for members to submit orders. All NYSE systems are currently operating normally.” Alibaba, which priced its massive initial public offering at $68 a share late on Thursday, will begin trading on the NYSE under the ticker “BABA” later on Friday morning. …