Update to 1.12.3.

*** 1,6 ****
! /*      $Id: html.h,v 1.47 2011/10/05 21:35:17 kristaps Exp $ */
  /*
   * Copyright (c) 2008, 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: html.h,v 1.49 2013/08/08 20:07:47 schwarze Exp $ */
  /*
   * Copyright (c) 2008, 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
*** 73,82 ****
--- 73,83 ----
  
  enum    htmlfont {
          HTMLFONT_NONE = 0,
          HTMLFONT_BOLD,
          HTMLFONT_ITALIC,
+         HTMLFONT_BI,
          HTMLFONT_MAX
  };
  
  struct  tag {
          struct tag       *next;
*** 115,124 ****
--- 116,126 ----
  #define HTML_IGNDELIM    (1 << 1)
  #define HTML_KEEP        (1 << 2)
  #define HTML_PREKEEP     (1 << 3)
  #define HTML_NONOSPACE   (1 << 4) /* never add spaces */
  #define HTML_LITERAL     (1 << 5) /* literal (e.g., <PRE>) context */
+ #define HTML_SKIPCHAR    (1 << 6) /* skip the next character */
          struct tagq       tags; /* stack of open tags */
          struct rofftbl    tbl; /* current table */
          struct tag       *tblt; /* current open table scope */
          struct mchars    *symtab; /* character-escapes */
          char             *base_man; /* base for manpage href */