Changes to --min-cert-level should cause a trustdb rebuild (issue 1366)
* g10/gpgv.c, g10/trustdb.c (read_trust_options): Add min_cert_level * g10/trustdb.c (check_trustdb_stale): Request a rebuild if pending_check_trustdb is true (set when we detect a trustdb parameter has changed). * g10/keylist.c (public_key_list): Use 'l' in the "tru" with-colons listing for min_cert_level not matching. * g10/tdbio.c (tdbio_update_version_record, create_version_record, tdbio_db_matches_options, tdbio_dump_record, tdbio_read_record, tdbio_write_record): Add a byte for min_cert_level in the tdbio version record.