* Added AES128 and AES256 ciphers in devtls.
* Added TLS_RSA_WITH_AES_128_CBC_SHA and
  TLS_RSA_WITH_AES_256_CBC_SHA handling in tlshand.
* Updated tls(3) manual accordingly.

These ciphers are not part of TLS 1.0 (RFC2246),
but were added by RFC3268. However, they are part
of TLS 1.1 (RFC4346) and TLS 1.2 (RFC5246).