Changes for clojure.core/for

zkim on Sun, 26 Sep 2010
user=> (for [x [0 1 2 3 4 5]
             :let [y (* x 3)]
             :when (even? y)]
         y)
(0 6 12)
nipra on Sat, 17 Jul 2010
user> (for [x [0 1 2 3 4 5]
            :let [y (* x 3)]
            :when (even? y)]
        y)
(0 6 12)