c-ares has historically passed around raw dns packets in binary form.
Now that we have a new parser, and messages are already parsed
internally, lets pass around that parsed message rather than requiring
multiple parse attempts on the same message. Also add a new
`ares_send_dnsrec()` and `ares_query_dnsrec()` similar to
`ares_search_dnsrec()` added with PR #719 that can return the pointer to
the `ares_dns_record_t` to the caller enqueuing queries and rework
`ares_search_dnsrec()` to use `ares_send_dnsrec()` internally.
Fix By: Brad House (@bradh352)
Brad House