apeduru

In regards to [CRL verify context ](https://github.com/pyca/pyopenssl/pull/483), does this verification method support [indirect CRL issuers](https://books.google.ca/books?id=ERSfUmmthMYC&pg=PT153&lpg=PT153&dq=indirect+CRL+issuers&source=bl&ots=nrzsLQniQh&sig=E6f1aH8x60sqbLWaPTh5OG0PNKo&hl=en&sa=X&ved=0ahUKEwi8vLag2ofOAhXmxYMKHQCsCBsQ6AEITTAH#v=onepage&q=indirect%20CRL%20issuers&f=false)?