A specific error code (CURLE_SSL_CRL_BADFILE) is defined with the option. It
is returned when the SSL exchange fails because the CRL file cannot be loaded.
Note that a failure in certificate verification due to a revocation information
-found in the CRL does not trigger this specific error.
+found in the CRL does not trigger this specific error. (Added in 7.18.3)
.IP CURLOPT_RANDOM_FILE
Pass a char * to a zero terminated file name. The file will be used to read
from to seed the random engine for SSL. The more random the specified file is,