ALBANY, N.Y. — Gov. Andrew Cuomo has revised his proposal for keeping juveniles out of New York’s adult prisons and jails.Draft legislation in the Democrat’s budget for the coming year would process most 16- and 17-year-old defendants in new youth sections of state criminal courts instead of family courts. If approved by the Legislature, most young criminals would go to juvenile detention facilities, though some convicted of the most serious crimes would go to separate youth units at two state prisons.The governor and …