dirmngr: Improve DNS code to retrieve arbitrary records.
* dirmngr/dns-cert.c (get_dns_cert): Add hack to retrieve arbitrary resource records. * dirmngr/dns-cert.h (DNS_CERTTYPE_RRBASE): New. (DNS_CERTTYPE_RR61): New.
This has been tested with ADNS on Unix and with the standard
resolver. Because ADNS works it should also work on Windows.
- Signed-off-by: Werner Koch <wk@gnupg.org>