copyplist
e->e_fromdomain = copyplist(lastat, true, e->e_rpool);
rwp->r_lhs = copyplist(rwp->r_lhs, true, NULL);
rwp->r_rhs = copyplist(rwp->r_rhs, true, NULL);
extern char **copyplist __P((char **, bool, SM_RPOOL_T *));