Changes for clojure.core/nthnext

zkim on Sun, 26 Sep 2010
user=> (nthnext (range 10) 3)
(3 4 5 6 7 8 9)

user=> (nthnext [] 3)
nil

zmila on Thu, 05 Aug 2010
user=> (nthnext (range 10) 3)
(3 4 5 6 7 8 9)


user=> (nthnext [] 3)
nil