* src/agent.h (struct keyinfo): New.
(scute_agent_free_keyinfo, scute_agent_keyinfo_list): New.
(scute_agent_learn, scute_agent_check_status): Add GRIP argument.
(scute_find_kinfo): Remove.
(scute_agent_get_cert): Use GRIP, instead of CERTREF.
* src/agent.c (struct keyinfo_parm, keyinfo_list_cb): New.
(scute_agent_free_keyinfo, scute_agent_keyinfo_list): New.
(scute_agent_release_card_info): Remove ->KINFO support.
(scute_find_kinfo, create_kinfo): Remove.
(learn_status_cb): Remove ->KINFO support.
(scute_agent_learn, scute_agent_check_status): Add GRIP argument.
* src/cert-gpgsm.c (keylist_cb_line): Don't touch cert->grip field.
* src/cert-object.c (scute_attr_prv): Use GRIP, instead of KINFO.
* src/cert.h (struct cert): Remove GRIP field.
(scute_attr_prv): Use GRIP, instead of KINFO.
* src/gpgsm.c (struct search_cb_parm): Use GRIP, instead of KINFO.
(search_cb): Likewise for scute_attr_prv.
Use CTX->GRIP, instead of ->KINFO->GRIP.
(scute_gpgsm_get_cert): Use GRIP, instead of KINFO.
* src/gpgsm.h (scute_gpgsm_get_cert): Use GRIP, instead of KINFO.
* src/slots.c (struct slot): Add GRIP field.
(scute_slots_initialize): Allocate slots by available keys.
(slot_init): Don't use KINFO, but GRIP.
(slots_update_slot): Follow the change of scute_agent_check_status.
(slots_detect_slot): Follow the change of scute_agent_learn.