Changes for clojure.core/identity

zkim on Sun, 26 Sep 2010
user=> (partition-by identity (sort "abcdaabccc"))
((\a \a \a) (\b \b) (\c \c \c \c) (\d))
cschreiner on Mon, 26 Jul 2010
user=>(partition-by identity (sort "abcdaabccc"))
((\a \a \a) (\b \b) (\c \c \c \c) (\d))