c-ares: upgrade 1.27.0 -> 1.28.1

Changelog 1.28.1 :

  This release contains a fix for a single significant regression introduced
  in c-ares 1.28.0.

  - ares_search() and ares_getaddrinfo() resolution fails if no search domains
    are specified. Issue #737

Changelog 1.28.0 :

  Features:

  - Emit warnings when deprecated c-ares functions are used. This can be
    disabled by passing a compiler definition of CARES_NO_DEPRECATED. PR #732
  - Add function ares_search_dnsrec() to search for records using the new DNS
    record data structures. PR #719
  - Rework internals to pass around ares_dns_record_t instead of binary data,
    this introduces new public functions of ares_query_dnsrec() and
    ares_send_dnsrec(). PR #730

Changes:

  - tests: when performing simulated queries, reduce timeouts to make tests run
    faster
  - Replace configuration file parsers with memory-safe parser. PR #725
  - Remove acountry completely, the manpage might still get installed otherwise. Issue #718

Bugfixes:

  - CMake: don't overwrite global required libraries/definitions/includes which
    could cause build errors for projects chain building c-ares. Issue #729
  - On some platforms, netinet6/in6.h is not included by netinet/in.h
    and needs to be included separately. PR #728
  - Fix a potential memory leak in ares_init(). Issue #724
  - Some platforms don't have the isascii() function. Implement as a macro. PR #721
  - CMake: Fix Chain building if CMAKE runtime paths not set
  - NDots configuration should allow a value of zero. PR #735

Signed-off-by: Jason Schonberg <schonm@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

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