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/interpreter/conditional/test_if_smaller.rb

@@ -5,6 +5,7 @@ module Risc
     include Ticker
 
     def setup
+      @preload = "Integer.lt"
       @string_input = as_main 'if( 5 < 5 ); return 1;else;return 2;end'
       super
     end