New options --database-key and --backoffice-key.
* src/payprocd.c (oDatabaseKey, oBackofficeKey): New const. (opts): Add new options. (parse_options): Impelment. Also check for unknown args. (cleanup): Free allocates vars. (check_openpgp_keys): New.
- Signed-off-by: Werner Koch <wk@gnupg.org>