dns/dnstable: Upgrade to version 0.13.0

  * Updated dependency to libwdns 0.11.0

  * Updated dependency to libmtbl 1.5.0

  * dnstable_lookup: add new command-line options -A, -a, -B, -b, and -c
    for time-fenced lookups.

  * Optimize time filtered searches on fileset sources with a filtering
    query using the subset of files which may contribute to matching
    results.

  * Fix duplication of results in unaggregated name prefix or rdata name
    suffix searches.

  * Fix improper skipping of results in IP range or prefix searches.

  * Fix return of non-name results in rdata name searches.

  * Fix decode_rdata() rdata length for Big Endian.

Sponsored by:	DomainTools LLC