luaF_newLclosure
LUAI_FUNC Closure *luaF_newLclosure (lua_State *L, int nelems);
Closure *cl = luaF_newLclosure(L, 1); /* create main closure */
cl=luaF_newLclosure(L,1);
cl=luaF_newLclosure(L,cl->l.p->sizeupvalues);
Closure *ncl = luaF_newLclosure(L, nup);