Bug #38917 - Native SPKAC support request

Wed Jan 30 09:06:49 MST 2013 - Pull request addressing feature request #38917 for native SPKAC support. Four new functions along with test cases:

(string) openssl_spki_new((object) private_key, (string) challenge, (int) algorithm)
(bool) openssl_spki_verify((string) spkac)
(string) openssl_spki_export((string) spkac)
(string) openssl_spki_export_challenge((string) spkac)