add init_message to space

so kernel::__init can use that and the first next_message does not need
to be reused

lib/parfait/space.rb

@@ -39,6 +39,7 @@ module Parfait
         @next_message = Message.new @next_message
         @next_frame = Frame.new @next_frame
       end
+      @init_message = Message.new @next_message
       init_layout
     end
 

lib/register/builtin/kernel.rb

@@ -14,7 +14,7 @@ module Register
           #Set up the Space as self upon init
           space = Parfait::Space.object_space
           function.info.add_code LoadConstant.new( space , Register.self_reg)
-          message_ind = space.get_layout().index_of( :next_message )
+          message_ind = space.get_layout().index_of( :init_message )
           # Load the message to new message register (r3)
           function.info.add_code Register.get_slot( :self , message_ind , :new_message)
           # And store the space as the new self (so the call can move it back as self)

lib/virtual/boot.rb

@@ -29,7 +29,7 @@ module Virtual
                   :Message => [:next_message , :receiver , :frame , :return_address , :caller , :name ],
                   :MetaClass => [],
                   :BinaryCode => [],
-                  :Space => [:classes ,:next_message ,:next_frame, :syscall_message],
+                  :Space => [:classes ,:init_message , :next_message ,:next_frame, :syscall_message],
                   :Frame => [:next_frame ],
                   :Layout => [:object_class] ,
                   :Class => [:object_layout ],