scd: Add heuristics to identify cardtype.
* scd/app-common.h (cardtype_t): Add CARDTYPE_GNUK and CARDTYPE_ZEITCONTROL. * scd/app.c (strcardtype): Handle CARDTYPE_GNUK and CARDTYPE_ZEITCONTROL. (app_new_register): Detect Gnuk and Zeit Control implementation by examining its ATR string.
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>