kbx: Add first version of STORE command to keyboxd.
* kbx/Makefile.am (keyboxd_CFLAGS): -DKEYBOX_WITH_X509. (keyboxd_LDADD): Add libksba. * kbx/kbxserver.c (cmd_store): New. * kbx/frontend.c (kbxd_store): New. * kbx/backend-support.c (is_x509_blob): New. (be_fingerprint_from_blob): New. * kbx/backend-kbx.c (be_kbx_seek): Add args FPR and FPRLEN. (be_kbx_insert): New.
- Signed-off-by: Werner Koch <wk@gnupg.org>