* scd/iso7816.c (iso7816_pso_csv): New.
* scd/app-help.c (app_help_pubkey_from_cert): Uncompress a point if
needed.
* scd/app-p15.c (CARD_PRODUCT_RSCS): New.
(struct prkdf_object_s): Add fields is_ecc, token_label, and
tokenflags.
(do_deinit): Free new fields.
(cardproduct2str): New.
(read_ef_prkdf): Set new is_ecc flag.
(read_ef_tokeninfo): Store some data and move Tokeninfo diags to ...
(read_p15_info): here.  set the product info here after all data has
been gathered.
(send_keypairinfo): Chnage the way the gpgusage flags are used.
(make_pin_prompt): If the token has a label and the current cert has
no CN, show the label as holder info.
(do_sign): Support ECDSA.  Take care of the gpgusage flags.
(do_decipher): Support ECDH.  Take care of the gpgusage flags.