misc fixes and (finally, sigh) green again

deeeep dive, almost 40 commits

test/risc/position/test_branch_listener.rb

@@ -5,6 +5,7 @@ module Risc
   class TestBranchListenerBooted < MiniTest::Test
     def setup
       Parfait.boot!
+      Risc.boot!
       @binary = Parfait::BinaryCode.new(1)
       @bin_pos = CodeListener.init(@binary,:interpreter).set(0)
       @label = Label.new("HI","ho" , FakeAddress.new(2))

test/risc/position/test_code_position.rb

@@ -4,6 +4,7 @@ module Risc
   class TestPositionTranslated < MiniTest::Test
     def setup
       Parfait.boot!
+      Risc.boot!
       @binary = Parfait::BinaryCode.new(1)
       @method = Parfait.object_space.types.values.first.methods
       @label = Risc.label("hi","ho")