Add SSL_get_cipher_by_value.

(Which is just an exported wrapper around ssl3_get_cipher_by_value.)

Change-Id: Ibba166015ce59e337ff50963ba20237ac4949aaf
Reviewed-on: https://boringssl-review.googlesource.com/3543
Reviewed-by: Adam Langley <agl@google.com>
2 files changed