Reduce duration of #sleep spec

Author: eregon

spec/ruby/core/kernel/sleep_spec.rb

@@ -24,7 +24,7 @@
 
   it "accepts any Object that reponds to divmod" do
     o = Object.new
-    def o.divmod(*); [1,0.2]; end
+    def o.divmod(*); [0, 0.001]; end
     sleep(o).should >= 0
   end