Update to version 1.6.17.

Pkgsrc changes:
* adapt PLIST (1 new file installed)
* fix name of patch file

Upstream changes:
1.6.17 2014-01-10
* Fix ldns_dnssec_zone_new_frm_fp_l to allow the last parsed line of a
  zone to be an NSEC3 (or its RRSIG) covering an empty non terminal.
* Add --disable-dane option to configure and check availability of the
  for dane needed X509_check_ca function in openssl.
* bugfix #490: Get rid of type-punned pointer warnings.
  Thanks Adam Tkac.
* Make sure executables are linked against libcrypto with the
  LIBSSL_LDFLAGS. Thanks Leo Baltus.
* Miscellaneous prototype fixes. Thanks Dag-Erling Sm�rgrav.
* README now shows preferred way to configure for examples and drill.
* Bind to source address for resolvers. drill binds to source with -I.
  Thanks Bryan Duff.
* -T option for ldns-dane that has specific exit status for PKIX
  validated connections without (secure) TLSA records.
* Fix b{32,64}_{ntop,pton} detection and handling.
* New RR type TKEY, but without operational practice.
* New RR types HIP, NINFO, RKEY, CDS, EUI48, EUI64, URI, CAA and TA.
* New output format flag (and accompanying functions) to print certain
  RR's as unknown type
* -u and -U parameter for ldns-read-zone to mark/unmark a RR type
  for printing as unknown type
* bugfix #504: GPOS RR has three rdata fields. Thanks Jelte Jansen.
* bugfix #497: Properly test for EOF when reading key files with drill.
* New functions: ldns_pkt_ixfr_request_new and
  ldns_pkt_ixfr_request_new_frm_str.
* Use SNI with ldns-dane
* bugfix #507: ldnsx Fix use of non-existent variables and not
  properly referring to instance variable.  Patch from shussain.
* bugfix #508: ldnsx Adding NSEC3PARAM to known/allowable RR type
  dictionary.  Patch from shussain.
* bugfix #517: ldns_resolver_new_frm_fp error when invoked using a NULL
  file pointer.
* Fix memory leak in contrib/python: ldns_pkt.new_query.
* Fix buffer overflow in fget_token and bget_token.
* ldns-verify-zone NSEC3 checking from quadratic to linear performance.
  Thanks NIC MX (nicmexico.mx)
* ldns-dane setup new ssl session for each new connect to prevent hangs
* bugfix #521: drill trace continue on empty non-terminals with NSEC3
* bugfix #525: Fix documentation of ldns_resolver_set_retry
* Remove unused LDNS_RDF_TYPE_TSIG and associated functions.
* Fix ldns_nsec_covers_name for zones with an apex only. Thanks Miek.
* Configure option to build perl bindings: --with-p5-dns-ldns
  (DNS::LDNS is a contribution from Erik Ostlyngen)
* bugfix #527: Move -lssl before -lcrypto when linking
* Optimize TSIG digest function name comparison (Thanks Marc Buijsman)
* Compare names case insensitive with ldns_pkt_rr_list_by_name and
  ldns_pkt_rr_list_by_name_and_type (thanks Johannes Naab)
* A separate --enable for each draft RR type: --enable-rrtype-ninfo,
  --enable-rrtype-rkey, --enable-rrtype-cds, --enable-rrtype-uri and
  --enable-rrtype-ta
* bugfix #530: Don't sign and verify duplicate RRs (Thanks Jelte Jansen)
* bugfix #505: Manpage and usage output fixes (Thanks Tomas Hozza)
* Adjust ldns_sha1() so that the input data is not modified (Thanks
  Marc Buijsman)
* Messages to stderr are now off by default and can be reenabled with
  the --enable-stderr-msgs configure option.

(he)