Extracting the mom instruction from builtin modules

Since they were embedded at first (easier copy/paste) they now got own files, like their brethren
also mini tests for each instruction , nice start

lib/mom/builtin/init.rb

@@ -0,0 +1,36 @@
+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
+
+        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
+        exit_sequence(builder)
+        return compiler
+      end
+    end
+
+  end
+end