gpg: Allow deletion of subkeys with --delete-[secret-]key.
* common/userids.c (classify_user_id): Do not set the EXACT flag in the default case. * g10/export.c (exact_subkey_match_p): Make static, * g10/delkey.c (do_delete_key): Implement subkey only deleting.
- GnuPG-bug-id: T4457