Changes for clojure.core/shuffle

jafingerhut on Wed, 28 Mar 2012
user=> (repeatedly 5 (partial shuffle [1 2 3]))
([1 2 3] [1 2 3] [1 2 3] [1 2 3] [3 1 2])
pkolloch on Fri, 20 Aug 2010
user=> (repeatedly 5 (partial shuffle [1 2 3]))
([1 2 3] [1 2 3] [1 2 3] [1 2 3] [3 1 2])