JPKI SELECT AID not following ISO standards

[dengert]

#3108 reports that when card-jpki.c does a SELECT AID against an unknown card, it causes problems.

ISO 7816-4 says SELECT AID is 00 A4 04 00 and optionally will return an FCI. card-jpki.c appears to use 00 A4 04 0C where 0C says no data is to be returned or data returned is proprietary.

Here is proposed untested PR:

card-jpki.c.diff.txt

@hamano can you or anyone else with a JPKI card test this or create other PR.

[frankmorgner]

00 A4 04 0C is fully conformant with iso 7816-4