kbx: Let keydb_search skip unwanted blobs.
* kbx/keybox.h (keybox_blobtype_t): New. * kbx/keybox-defs.h (BLOBTYPE_*): Replace by KEYBOX_BLOBTYPE_*. * kbx/keybox-search.c (keybox_search): Add arg want_blobtype and skip non-matching blobs. * sm/keydb.c (keydb_search): Pass KEYBOX_BLOBTYPE_X509 to keybox_search. * g10/keydb.c (keydb_search): Pass KEYBOX_BLOBTYPE_PGP to keybox_search.
Without this fix a listing of all keys would fail because the wrong
blob type would be returned for the gpg or gpgsm.
- Signed-off-by: Werner Koch <wk@gnupg.org>