Implement class instance variables

as they are just the type of the meta_class, that was relatively simple.
I feel this is what oo is meant to be, instance variables and methods for the objects, and since classes are objects, for them too.
Class variables seem like a design mistake, weird scoping rules and no data hiding (left as an exercise to the reader)

test/parfait/type/test_type_api.rb

@@ -58,6 +58,10 @@ module Parfait
       assert_equal :Type , @type.type_at(0)
     end
 
+    def test_add_again
+      assert_equal @type.to_hash , @type.add_instance_variable(:type , :Type).to_hash
+    end
+
     def test_inspect_added
       type = test_add_name
       assert type.inspect.include?("boo") , type.inspect

test/vool/class_send/test_class_instance.rb

@@ -19,10 +19,15 @@ module Vool
     end
 
     def setup
-      source = "class Integer;def +(other);X.int_operator(:+);end;end;" + class_main
-      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(source)
+      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(class_main)
       @ins = ret.compilers.find{|c|c.callable.name==:some_inst}.mom_instructions.next
     end
+    def test_class_inst
+        space_class = Parfait.object_space.get_class
+        assert_equal :Space , space_class.name
+        names = space_class.meta_class.instance_type.names
+        assert names.index_of(:inst) , names
+    end
     def test_array
       check_array   [SlotLoad, ReturnJump, Label, ReturnSequence, Label]  , @ins
     end