move parfait into register

register layer uses parfait models to generate object space
so parfait  should be part of register (not above it)

lib/register/parfait/variable.rb

@@ -0,0 +1,19 @@
+module Parfait
+  class Variable < Object
+
+    def initialize type , name , value = nil
+      raise "not type #{type}(#{type.class})" unless Register.machine.space.get_class_by_name(type)
+      self.type , self.name , self.value = type , name , value
+      self.value = 0 if self.type == :Integer and value == nil
+      raise "must give name for variable" unless name
+    end
+    attributes [:type , :name, :value]
+
+    def to_s
+      "Variable(#{self.type} ,#{self.name})"
+    end
+    def inspect
+      to_s
+    end
+  end
+end