Copy risc compiler stuff to mom

Start to separate the layers. 
wip, just checkin in to see the following changes better

test/vool/test_class_statement.rb

@@ -0,0 +1,29 @@
+
+require_relative "helper"
+
+module Vool
+  class TestClassStatement < MiniTest::Test
+    include VoolCompile
+
+    def setup
+      @ins = compile_first_method( "if(@a) ; @a = 5 ; else; @a = 6 ; end")
+    end
+
+    def test_condition_compiles_to_check
+      assert_equal TruthCheck , @ins.class , @ins
+    end
+    def test_condition_is_slot
+      assert_equal SlotDefinition , @ins.condition.class , @ins
+    end
+    def test_label_after_check
+      assert_equal Label , @ins.next.class , @ins
+    end
+    def test_label_last
+      assert_equal Label , @ins.last.class , @ins
+    end
+    def test_array
+      check_array [TruthCheck, Label, SlotLoad, Jump, Label, SlotLoad ,
+                   Label] , @ins
+    end
+  end
+end