Usage of X509_NAME_oneline is ``strongly discouraged''

[jcrowgey]

From the openssl 1.1.0f manual page for X509_NAME_PRINT_EX(3SSL)

NOTES
       The functions X509_NAME_oneline() and X509_NAME_print() are legacy functions which produce a non standard output form, they don't handle multi character fields and
       have various quirks and inconsistencies. Their use is strongly discouraged in new applications.

I noticed that pyopenssl.crypto.X509Name.repr uses X509_NAME_oneline to generate part of the repr:

pyopenssl/src/OpenSSL/crypto.py

Line 647 in 57c2f03

format_result = _lib.X509_NAME_oneline(

[alex]

We intended to deprecate this entire class (#1321) in favor of pyca/cryptography's APIs, so this is overtaken by events.