Fix iOS 1 SSL connection

Detect if we're talking to iOS 1 `if (connection->device->version == 0)`
and set `SSL_CTX_set_min_proto_version(ssl_ctx, 0);` to support SSL3.

iOS 1 doesn't understand TLS1_VERSION, it can only speak SSL3_VERSION.
However, modern OpenSSL is usually compiled without SSLv3 support.
So if we set min_proto_version to SSL3_VERSION on an OpenSSL instance which doesn't support it,
it will just ignore min_proto_version altogether and fall back to an even higher version.
To avoid accidentally breaking iOS 2.0+, we set min version to 0 instead.

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