Merge branch 'set_key-changes' into master.

ChangeLog

aes128-meta.c

aes192-meta.c

aes256-meta.c

arcfour-meta.c

arcfour.c

arcfour.h

arctwo-meta.c

arctwo.c

arctwo.h

camellia128-meta.c

camellia192-meta.c

camellia256-meta.c

cast128.c

cast128.h

eax.h

examples/nettle-benchmark.c

examples/nettle-openssl.c

gcm-aes128.c

gcm-aes192.c