Update c-ares to version 1.16.1 / rev 10 via SR 849356
    
    https://build.opensuse.org/request/show/849356
    by user adamm + dimstar_suse
    - ares_dns.h, missing_header.patch: re-add missing header in last release
    
    - Version update to 1.17.0
      Security:
      * avoid read-heap-buffer-overflow in ares_parse_soa_reply found during
        fuzzing
      * Avoid theoretical buffer overflow in RC4 loop comparison
      * Empty hquery->name could lead to invalid memory access
      * ares_parse_{a,aaaa}_reply() could return a larger *naddrttls than was
        passed in (bsc#1178882, CVE-2020-8277)
      Changes:
      * Update help information for adig, acountry, and ahost
      * Test Suite now uses dynamic system-assigned ports rather than hardcoded
        ports to prevent failures in containers
      * Detect remote DNS server does not support EDNS using rules from RFC 6891
      * Source tree has been reorganized to use a more modern layout
      * Allow parsing of CAA Resource