Update to 1.12.3.

*** 1,6 ****
! /*      $Id: libroff.h,v 1.27 2011/07/25 15:37:00 kristaps Exp $ */
  /*
   * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
--- 1,6 ----
! /*      $Id: libroff.h,v 1.28 2013/05/31 21:37:17 schwarze Exp $ */
  /*
   * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
*** 29,39 ****
  struct  tbl_node {
          struct mparse    *parse; /* parse point */
          int               pos; /* invocation column */
          int               line; /* invocation line */
          enum tbl_part     part;
!         struct tbl        opts;
          struct tbl_row   *first_row;
          struct tbl_row   *last_row;
          struct tbl_span  *first_span;
          struct tbl_span  *current_span;
          struct tbl_span  *last_span;
--- 29,39 ----
  struct  tbl_node {
          struct mparse    *parse; /* parse point */
          int               pos; /* invocation column */
          int               line; /* invocation line */
          enum tbl_part     part;
!         struct tbl_opts   opts;
          struct tbl_row   *first_row;
          struct tbl_row   *last_row;
          struct tbl_span  *first_span;
          struct tbl_span  *current_span;
          struct tbl_span  *last_span;