Fix bug #79983: Add support for OCB mode

OCB mode ciphers were already exposed to openssl_encrypt/decrypt,
but misbehaved, because they were not treated as AEAD ciphers.
From that pe

Fix bug #79983: Add support for OCB mode

OCB mode ciphers were already exposed to openssl_encrypt/decrypt,
but misbehaved, because they were not treated as AEAD ciphers.
From that perspective, OCB should be treated the same way as GCM.
In OpenSSL 1.1 the necessary controls were unified under
EVP_CTRL_AEAD_* (and OCB is only supported since OpenSSL 1.1).

Closes GH-6337.

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