* misc.c (openpgp_pk_algo_usage): Allow AUTH where SIGN is allowed.
* keygen.c (ask_passphrase): No need to allocated S2K in secure
memory.
* scdaemon.c (main): --pcsc-driver again defaults to pcsclite.
David Corcoran was so kind to remove the GPL incompatible
advertisng clause from pcsclite.
* apdu.c (apdu_open_reader): Actually make pcsc-driver option work.