* camellia-meta.c: Use _NETTLE_CIPHER_SEP_SET_KEY.

* camellia.h (struct camellia_ctx): Replaced flag camellia128 by
expanded key length nkeys.

* camellia.c (camellia_set_encrypt_key): Renamed, from...
(camellia_set_key): ... old name.
(camellia_invert_key): New function.
(camellia_set_decrypt_key): New function, using
camellia_invert_key.
(camellia_crypt): Renamed, from...
(camellia_encrypt): ... old name.
(camellia_decrypt): Deleted, no longer needed. camellia_crypt used
for both encryption and decryption.

Rev: nettle/ChangeLog:1.95
Rev: nettle/camellia-meta.c:1.2
Rev: nettle/camellia.c:1.4
Rev: nettle/camellia.h:1.4