kbx: Implement update operation for OpenPGP keyblocks.
* kbx/keybox-update.c (keybox_update_keyblock): Implement. * kbx/keybox-search.c (get_blob_flags): Move to ... * kbx/keybox-defs.h (blob_get_type): here. * kbx/keybox-file.c (_keybox_read_blob2): Fix calling without R_BLOB. * g10/keydb.c (build_keyblock_image): Allow calling without R_SIGSTATUS. (keydb_update_keyblock): Implement for keybox. * kbx/keybox-dump.c (_keybox_dump_blob): Fix printing of the unhashed size. Print "does not expire" also on 64 bit platforms.
- Signed-off-by: Werner Koch <wk@gnupg.org>