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/support/risc_interpreter.rb

@@ -6,10 +6,11 @@ module Risc
   module Ticker
     include ScopeHelper
     include Output
+    include Preloader
 
     def setup
       compiler = RubyX::RubyXCompiler.new(RubyX.interpreter_test_options)
-      @linker = compiler.ruby_to_binary(@string_input, :interpreter)
+      @linker = compiler.ruby_to_binary(preload + @string_input, :interpreter)
       @interpreter = Interpreter.new(@linker)
       @interpreter.start_program
     end
@@ -103,17 +104,11 @@ module Risc
     # use the input as it, compile and run it
     # input muts contain a Space.main, but may contain more classes and methods
     def run_input(input)
-      @string_input = input
+      @string_input = preload + input
       do_setup
       run_all
     end
 
-    # wrap the input in Space (main is assumed to be part of it)
-    def run_space(input)
-      @string_input = in_Space(input)
-      do_setup
-      run_all
-    end
     def run_all
       while(@interpreter.instruction)
         @interpreter.tick