Author: John Gasper
MDL-45981 auth_cas: add suport to SSL3 on CAS.
This patch gives the user the option of specifying which SSL version PHPCAS/cURL should use.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=6d4cae04b6a6204c307339d98618a35ec23becbf
http://github.com/moodle/moodle/commit/6d4cae04b6a6204c307339d98618a35ec23becbf
+ 3.0 en [auth_cas_curl_ssl_version,auth_cas]
+ 3.0 en [auth_cas_curl_ssl_version_key,auth_cas]