Port changes to generic Array Contains/IndexOf (#1919)
Port changes to generic Array Contains/IndexOf (#1919)


sandreenko/corert,botaberg/corert,gregkalapos/corert,tijoytom/corert,yizhang82/corert,shrah/corert,tijoytom/corert,krytarowski/corert,botaberg/corert,krytarowski/corert,yizhang82/corert,krytarowski/corert,yizhang82/corert,gregkalapos/corert,sandreenko/corert,shrah/corert,krytarowski/corert,shrah/corert,sandreenko/corert,botaberg/corert,tijoytom/corert,shrah/corert,tijoytom/corert,gregkalapos/corert,gregkalapos/corert,sandreenko/corert,yizhang82/corert,botaberg/corert