A script without context or explanation of what it is useful for. Why did you submit this?
This, on the other hand, turns any web developer's SSL cert into their PGP key without their advance cooperation. (They don't have to have one, understand why they need one, or create one and publish the public key. They just have to have an https site, like all my clients already do.) Limited utility, since decrypting is impossible for regular people and larger corps would have that private key locked down like crazy, but a very neat hack. I could actually see myself using it, too, for secure geek-2-geek transmissions.
s_client.c calls SSL_CTX_set_verify() (the default verifier). Results from that can be obtained from SSL_get_verify_result() and are documented in verify(1).
All of the CRL/revocation-related return codes there are marked "unused". There is no mention of OCSP.
I found found a "crl_check/crl_check_all" option for verify(1). Command line help mentions an "ocsphelper". OpenSSL does have a separate OCSP client. But I don't think any of this machinery is activated by default.