rewrite mknew to inherit fields before init

I am horrified to admit that C++'s constructor static initialization
list syntax abruptly makes sense to me and I understand the problem
it is trying to solve

vacuum_gambit.p8

@@ -29,23 +29,32 @@ end
 -- if tt.init is defined, generated
 -- new calls tt.init(ret) after
 -- ret is definitely not nil,
--- before calling setmetatable.
+-- after calling setmetatable.
 -- use to initialize mutables.
 --
 -- if there was a previous new,
--- it is invoked on the new
+-- it is invoked before
--- object *after* more, because
+-- setting tt's metatable, so
--- this works better with the
+-- each new will see its
--- `more` impls i use.
+-- inheritance chain.
 function mknew(tt)
- local mt,oldnew,more = {__index=tt},tt.new,rawget(tt, "init")
+ local mt,oldinit,more = {__index=tt},tt.superinit,rawget(tt, "init")
  tt.new=function(ret)
   if(not ret) ret = {}
-  if(more) more(ret)
-  if(oldnew) oldnew(ret)
   setmetatable(ret, mt)
+  if(oldinit) oldinit(ret)
+  if (more) more(ret)
   return ret
  end
+ 
+ if oldinit and more then
+  tt.superinit = function(ret)
+   oldinit(ret)
+   more(ret)
+  end
+ elseif more then
+  tt.superinit = more
+ end
  return tt
 end