Provide a shim for SSL_cipher_get_id in OpenSSL versions < 1.0.1
Tor fails to compile on OpenSSL 1.0.0, because we use SSL_cipher_get_id, which was introduced in OpenSSL 1.0.1.
We can access the id member of the cipher object instead, like this: https://github.com/SlimRoms/android_external_chromium/commit/731158395b8ae1105c69cc42dae6244385f6b4ff