gpg: Allow gpgv to work with a trustedkeys.kbx file.
* g10/keydb.h (KEYDB_RESOURCE_FLAG_GPGVDEF): New. * g10/keydb.c (keydb_add_resource): Take care of new flag. * g10/gpgv.c (main): Use new flag.
- GnuPG-bug-id: T2025
- Signed-off-by: Werner Koch <wk@gnupg.org>