FILE PHOTO: A person waits on the Wall Street subway platform in the Financial District of Manhattan, New York City LONDON (Reuters) – It's a packed week ahead for markets with the European Central Bank holding a crunch meeting on whether or not to hike rates again as the economy falters, while the United States releases latest inflation numbers. Rising oil prices could re-ignite angst about price pressures. Key UK jobs data and a G20 summit, marked by the absence of China's Xi Jinping, are also in focus. Here's your week ahead in markets from Yoruk Bahceli in Amsterdam, Ira…