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* main.h, g10.c (main), card-util.c (change_pin): If "admin" has not been issued, skip right to the CHV1/CHV2 PIN change. No need to show the unblock or admin PIN change option. (card_edit): Add "admin" command to add admin commands to the menu. Do not allow admin commands until "admin" is given. * app-openpgp.c (verify_chv3): Show a countdown of how many wrong admin PINs can be entered before the card is locked. * options.h, g10.c (main), app-openpgp.c (verify_chv3): Remove --allow-admin.