Jeffries, co-defendant plead not guilty to 16 charges * Prosecutors say dozens of men were victims * Jeffries led Abercrombie from 1992 to 2014 (Adds comment request to victims' lawyers in paragraph 16, Abercrombie share info in paragraph 19) By Siddharth Cavale CENTRAL ISLIP, New York, Oct 25 (Reuters) - Mike Jeffries, former longtime chief executive of Abe...