Move the space instance to the parfait module

A better fit, maybe even a pattern for singletons

test/melon/test_compiler.rb

@@ -9,13 +9,13 @@ module Melon
 
     def test_creates_class_without_deriviation
       Compiler.compile "class Testing ; end"
-      assert t = Parfait::Space.object_space.get_class_by_name(:Testing) , "No classes created"
+      assert t = Parfait.object_space.get_class_by_name(:Testing) , "No classes created"
       assert_equal :Object , t.super_class_name
     end
 
     def test_creates_class_with_deriviation
       Compiler.compile  "class Test2 < List ;end"
-      assert t = Parfait::Space.object_space.get_class_by_name(:Test2) , "No classes created"
+      assert t = Parfait.object_space.get_class_by_name(:Test2) , "No classes created"
       assert_equal :List , t.super_class_name
     end