Changes for clojure.core/neg?

jafingerhut on Wed, 28 Mar 2012
user=> (neg? -1)
true
user=> (neg? 0)
false
user=> (neg? 1)
false
replore on Tue, 15 Nov 2011
user=> (neg? -1)
true
user=> (neg? 0)
false
user=> (neg? 1)
false
dpritchett on Tue, 13 Jul 2010
user=> (neg? -1)
true
user=> (neg? 0)
false