SINGAPORE, July 20 (Reuters) - The Turkish lira came under renewed pressure on Wednesday and fell to its lowest level since last September, in the wake of reports of a widening purge in Turkey after an abortive coup last week. lira TRYTOM=D3 fell to as low as 3.0630 versus the dollar in Asian trading, its lowest level since late September 2015. It last stood at 3.0590, down about 0.6 percent on the day.