g10: Support key attribute change at --card-edit/generate.
* g10/card-util.c (ask_card_rsa_keysize): Drop support for magic number 25519 for ed25519/cv25519. Rename from ask_card_keyattr. (ask_card_keyattr): Support ECC, as well as RSA. (do_change_keyattr): Support ECC dropping magical number 25519. * g10/keygen.c (ask_curve): Allow call from outside, adding last arg of CURRENT. (generate_keypair): Follow the change of ask_curve. (generate_subkeypair): Likewise.
- GnuPG-bug-id: T3781
- Signed-off-by: NIIBE Yutaka <firstname.lastname@example.org>