7388 Support DHCP Client FQDN. Allow IAID/DUID for all v4.

*** 1,8 ****
--- 1,9 ----
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
   */
  
  /*
   * Copyright (c) 1983, 1989, 1993
   *    The Regents of the University of California.  All rights reserved.
*** 574,583 ****
--- 575,585 ----
  #define ns_parse_ttl            __ns_parse_ttl
  #define ns_datetosecs           __ns_datetosecs
  #define ns_name_ntol            __ns_name_ntol
  #define ns_name_ntop            __ns_name_ntop
  #define ns_name_pton            __ns_name_pton
+ #define ns_name_pton2           __ns_name_pton2
  #define ns_name_unpack          __ns_name_unpack
  #define ns_name_pack            __ns_name_pack
  #define ns_name_compress        __ns_name_compress
  #define ns_name_uncompress      __ns_name_uncompress
  #define ns_name_skip            __ns_name_skip
*** 630,639 ****
--- 632,642 ----
  int             ns_parse_ttl(const char *, ulong_t *);
  uint32_t        ns_datetosecs(const char *cp, int *errp);
  int             ns_name_ntol(const uchar_t *, uchar_t *, size_t);
  int             ns_name_ntop(const uchar_t *, char *, size_t);
  int             ns_name_pton(const char *, uchar_t *, size_t);
+ int             ns_name_pton2(const char *, uchar_t *, size_t, size_t *);
  int             ns_name_unpack(const uchar_t *, const uchar_t *,
                                      const uchar_t *, uchar_t *, size_t);
  int             ns_name_pack(const uchar_t *, uchar_t *, int,
      const uchar_t **, const uchar_t **);
  int             ns_name_uncompress(const uchar_t *, const uchar_t *,