Log Message:
1.6.15
        * Remove LDNS_STATUS_EXISTS_ERR from ldns/error.h to make ldns
          binary compatible with earlier releases again.

1.6.14
        * DANE support (RFC6698), including ldns-dane example tool.
        * Configurable default CA certificate repository for ldns-dane with
          --with-ca-file=CAFILE and --with-ca-path=CAPATH
        * Configurable default trust anchor with --with-trust-anchor=FILE
          for drill, ldns-verify-zone and ldns-dane
        * bugfix #474: Define socklen_t when undefined (like in Win32)
        * bugfix #473: Dead code removal and resource leak fix in drill
        * bugfix #471: Let ldns_resolver_push_dnssec_anchor accept DS RR's too.
        * Various bugfixes from code reviews from CZ.NIC and Paul Wouters
        * ldns-notify TSIG option argument checking
        * Let ldns_resolver_nameservers_randomize keep nameservers and rtt's
          in sync.
        * Let ldns_pkt_push_rr now return false on (memory) errors.
        * Make buffer_export comply to documentation and fix buffer2str
        * Various improvements and fixes of pyldns from Katel Slany
          now documented in their own Changelog.
        * bugfix: Make ldns_resolver_pop_nameserver clear the array when
          there was only one.
        * bugfix #459: Remove ldns_symbols and export symbols based on regex
        * bugfix #458: Track all newly created signatures when signing.
        * bugfix #454: Only set -g and -O2 CFLAGS when no CFLAGS was given.
        * bugfix #457: Memory leak fix for ldns_key_new_frm_algorithm.
        * pyldns memory handling fixes and the python3/ldns-signzone.py
          examples script contribution from Karel Slany.
        * bugfix #450: Base # bytes for P, G and Y (T) on the guaranteed
          to be bigger (or equal) P in ldns_key_dsa2bin.
        * bugfix #449: Deep free cloned rdf's in ldns_tsig_mac_new.
        * bugfix #448: Copy nameserver value (in stead of reference) of the
          answering nameserver to the answer packet in ldns_send_buffer, so
          the original value may be deep freed with the ldns_resolver struct.
        * New -0 option for ldns-read-zone to replace inception, expiration
          and signature rdata fields with (null). Thanks Paul Wouters.
        * New -p option for ldns-read-zone to prepend-pad SOA serial to take
          up ten characters.
        * Return error if printing RR fails due to unknown/null RDATA.