* app.c (app_setattr): New.
(do_getattr): New.
(do_learn_status): Reimplemented in terms of do_getattr.
* app-openpgp.c (do_change_pin): Make sure CVH1 and CHV2 are
always synced.
(verify_chv2, verify_chv3): New. Factored out common code.
(do_setattr, do_sign, do_auth, do_decipher): Change the names of
the prompts to match that we have only 2 different PINs.
(app_select_openpgp): Check whether the card enforced CHV1.
(convert_sig_counter_value): New. Factor out code from
get_sig_counter.
* card-common.h (struct p15_private_s): Forward declaration. Add
it to card_ctx_s.
* card.c (card_close): Make sure private data is released.
(card_enum_certs): New.
* card-p15.c (p15_release_private_data): New.
(init_private_data): New to work around an OpenSC weirdness.
(p15_enum_keypairs): Do an OpenSC get_objects only once.
(p15_enum_certs): New.
(card_p15_bind): Bind new function.
* command.c (cmd_learn): Return information about the certificates.
* gpgsm.c: New command --learn-card
* call-agent.c (learn_cb,gpgsm_agent_learn): New.
* gpgsm.c (main): Print error messages for non-implemented commands.
agent/
* learncard.c: New.
* divert-scd.c (ask_for_card): The serial number is binary so
convert it to hex here.
* findkey.c (agent_write_private_key): New.
* genkey.c (store_key): And use it here.
scd/
* pkdecrypt.c (agent_pkdecrypt): Changed the way the diversion is done.
* divert-scd.c (divert_pkdecrypt): Changed interface and
implemented it.
