9718 update mandoc to 1.14.4

*** 1,9 ****
! /*      $Id: html.h,v 1.87 2017/07/08 14:51:04 schwarze Exp $ */
  /*
   * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
!  * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
--- 1,9 ----
! /*      $Id: html.h,v 1.92 2018/06/25 16:54:59 schwarze Exp $ */
  /*
   * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
!  * Copyright (c) 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
*** 21,39 ****
          TAG_HEAD,
          TAG_BODY,
          TAG_META,
          TAG_TITLE,
          TAG_DIV,
          TAG_H1,
          TAG_H2,
          TAG_SPAN,
          TAG_LINK,
          TAG_BR,
          TAG_A,
          TAG_TABLE,
-         TAG_COLGROUP,
-         TAG_COL,
          TAG_TR,
          TAG_TD,
          TAG_LI,
          TAG_UL,
          TAG_OL,
--- 21,38 ----
          TAG_HEAD,
          TAG_BODY,
          TAG_META,
          TAG_TITLE,
          TAG_DIV,
+         TAG_IDIV,
          TAG_H1,
          TAG_H2,
          TAG_SPAN,
          TAG_LINK,
          TAG_BR,
          TAG_A,
          TAG_TABLE,
          TAG_TR,
          TAG_TD,
          TAG_LI,
          TAG_UL,
          TAG_OL,
*** 117,126 ****
--- 116,126 ----
  struct  tbl_span;
  struct  eqn_box;
  
  void              roff_html_pre(struct html *, const struct roff_node *);
  
+ void              print_gen_comment(struct html *, struct roff_node *);
  void              print_gen_decls(struct html *);
  void              print_gen_head(struct html *);
  struct tag       *print_otag(struct html *, enum htmltag, const char *, ...);
  void              print_tagq(struct html *, const struct tag *);
  void              print_stagq(struct html *, const struct tag *);
*** 129,135 ****
  void              print_tbl(struct html *, const struct tbl_span *);
  void              print_eqn(struct html *, const struct eqn_box *);
  void              print_paragraph(struct html *);
  void              print_endline(struct html *);
  
! char             *html_make_id(const struct roff_node *);
! int               html_strlen(const char *);
--- 129,134 ----
  void              print_tbl(struct html *, const struct tbl_span *);
  void              print_eqn(struct html *, const struct eqn_box *);
  void              print_paragraph(struct html *);
  void              print_endline(struct html *);
  
! char             *html_make_id(const struct roff_node *, int);