Changes for clojure.core/namespace

Miles on Fri, 22 Oct 2010
user=> (def x "Foobar")
#'user/x

user=> (namespace 'user/x)
"user"
zkim on Sun, 26 Sep 2010
user=> (def x "Clojure")
#'user/x

user=> (namespace 'user/x)
"user"
Miles on Sat, 11 Sep 2010
user=> (def x "Clojure")
#'user/x
user=> (namespace 'user/x)
"user"