* ext/openssl/ossl_x509name.c: Use the numerical representation of
unrecognized OIDs instead of the sn "UNDEF".
* test/openssl/test_x509name.rb: Add tests for the fixed behavior.
Patch provided by Paul Kehrer, thank you!
[ruby-core:41769] [Feature #5787]
merge revision(s) 34481,34488: [Backport #5983]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34489 b2dd03c8-39d4-4d8f-98ff-823fe69b080e