8527 tty buffer/queue sizes should be larger

*** 137,148 ****
   */
  static struct module_info pts_info = {
          0xface,
          "pts",
          0,
!         512,
!         512,
          128
  };
  
  static struct qinit ptsrint = {
          NULL,
--- 137,148 ----
   */
  static struct module_info pts_info = {
          0xface,
          "pts",
          0,
!         _TTY_BUFSIZ,
!         _TTY_BUFSIZ,
          128
  };
  
  static struct qinit ptsrint = {
          NULL,
*** 407,417 ****
  
          mop->b_datap->db_type = M_SETOPTS;
          mop->b_wptr += sizeof (struct stroptions);
          sop = (struct stroptions *)mop->b_rptr;
          sop->so_flags = SO_HIWAT | SO_LOWAT | SO_ISTTY;
!         sop->so_hiwat = 512;
          sop->so_lowat = 256;
          putnext(rqp, mop);
  
          return (0);
  }
--- 407,417 ----
  
          mop->b_datap->db_type = M_SETOPTS;
          mop->b_wptr += sizeof (struct stroptions);
          sop = (struct stroptions *)mop->b_rptr;
          sop->so_flags = SO_HIWAT | SO_LOWAT | SO_ISTTY;
!         sop->so_hiwat = _TTY_BUFSIZ;
          sop->so_lowat = 256;
          putnext(rqp, mop);
  
          return (0);
  }