removing builtin as a concept (wip)

the "old" way of generating compilers is now obsolete
we can use ruby code with mom macros to achieve the same
Three step wip
remove old builtin
fix tests (including adding necessary methods)
fixup and inclusion of builtin code to parfait

lib/mom/macro/init.rb

@@ -1,37 +1,4 @@
 module Mom
-  module Builtin
-    class Init < ::Mom::Instruction
-      def to_risc(compiler)
-        builder = compiler.builder(compiler.source)
-        builder.build do
-          factory! << Parfait.object_space.get_factory_for(:Message)
-          message << factory[:next_object]
-          next_message! << message[:next_message]
-          factory[:next_object] << next_message
-        end
-        builder.reset_names
-        Mom::MessageSetup.new(Parfait.object_space.get_main).build_with( builder )
-
-        builder.build do
-          message << message[:next_message]
-          space? << Parfait.object_space
-          message[:receiver] << space
-        end
-
-        exit_label = Risc.label(compiler.source , "#{compiler.receiver_type.object_class.name}.#{compiler.source.name}" )
-        ret_tmp = compiler.use_reg(:Label).set_builder(builder)
-        builder.build do
-          ret_tmp << exit_label
-          message[:return_address] << ret_tmp
-          add_code Risc.function_call( "__init__ issue call" ,  Parfait.object_space.get_main)
-          add_code exit_label
-        end
-        compiler.reset_regs
-        Builtin.exit_sequence(builder)
-        return compiler
-      end
-    end
-  end
   class Init < Macro
     def to_risc(compiler)
       builder = compiler.builder(compiler.source)
@@ -59,7 +26,7 @@ module Mom
         add_code exit_label
       end
       compiler.reset_regs
-      Builtin.exit_sequence(builder)
+      Macro.exit_sequence(builder)
       return compiler
     end
   end