TOKYO( Reuters)-Tokyo area commuters faced packed trains on Friday on some lines due to delays, but there was little other impact after a strong quake rocked the Japanese capital late the night before, although authorities warned of aftershocks for up to a week.... One of the biggest commuter train stations, Shinagawa, lost power as well, forcing people into long lines for cabs as they tried to get home on Thursday night.... Several dozen people were injured, mainly by falls or being struck by