Lots of preloading for tests

so many relied (implicitly( on some builtin function
after all can't do much in ruby without calling
Now all those dependencies are explicit
Small risc changes come because the macro version has a return label and unreachable label

test/risc/test_interpreter.rb

@@ -2,11 +2,10 @@ require_relative "helper"
 
 module Risc
   class TestInterpreterBasics < MiniTest::Test
+    include ScopeHelper
     def setup
-      Parfait.boot!(Parfait.default_test_options)
-      Mom.boot!
-      Risc.boot!
-      @linker = Mom::MomCollection.new.to_risc.translate(:interpreter)
+      compiler = compiler_with_main()
+      @linker = compiler.to_target( :interpreter)
     end
 
     def test_class
@@ -55,12 +54,12 @@ module Risc
     end
     def test_pc1
       @interpreter.tick
-      assert_equal 40168 , @interpreter.pc
+      assert_equal 37704 , @interpreter.pc
     end
     def test_pc2
       @interpreter.tick
       @interpreter.tick
-      assert_equal 40172 , @interpreter.pc
+      assert_equal 37708 , @interpreter.pc
     end
     def test_tick2
       @interpreter.tick