Changes for clojure.core/partition-all

zkim on Sun, 26 Sep 2010
user=> (partition 4 [0 1 2 3 4 5 6 7 8 9])
((0 1 2 3) (4 5 6 7))

user=> (partition-all 4 [0 1 2 3 4 5 6 7 8 9])
((0 1 2 3) (4 5 6 7) (8 9))
nipra on Tue, 20 Jul 2010
user> (partition 4 [0 1 2 3 4 5 6 7 8 9])
((0 1 2 3) (4 5 6 7))
user> (partition-all 4 [0 1 2 3 4 5 6 7 8 9])
((0 1 2 3) (4 5 6 7) (8 9))