# does the same as:
# foreach_keyring_do 'import_keys_from_keyring' "${GPGHOMEDIR}/pubring.gpg"
# but without using gpg, just cat and find
# does the same as:
# foreach_keyring_do 'import_keys_from_keyring' "${GPGHOMEDIR}/pubring.gpg"
# but without using gpg, just cat and find