starting to fix builtin

start at Object get_interna_word
using the pattern to replace the whole risc method with a single mom instruction. Copying the original risc code into the instrucitons to_risc
also adding some very basic tests

lib/risc/builtin/space.rb

@@ -8,7 +8,6 @@ module Risc
         # defined here as empty, to be redefined
         def main(context)
           compiler = compiler_for(:Space , :main ,{args: :Integer})
-          compiler.add_mom( Mom::ReturnSequence.new)
           return compiler
         end