* app-openpgp.c (store_fpr): Fixed fingerprint calculation.

* keygen.c (gen_card_key): Obviously we should use the creation
date received from SCDAEMON, so that the fingerprints will match.
* sign.c (do_sign): Pass the serialno to the sign code.
* keyid.c (serialno_and_fpr_from_sk): New.

g10/call-agent.h

@@ -23,6 +23,7 @@
 
 struct agent_card_info_s {
   int error;         /* private. */
+  char *serialno;    /* malloced hex string. */
   char *disp_name;   /* malloced. */
   char *pubkey_url;  /* malloced. */
   char fpr1valid;