default conf: Disable SSLv3, like SSLv2, in the default configuration.

Committed by: covener
Reviewed by: covener, ylavic, gsmith
Backported by: ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1678700 13f79535-47bb-0310-9956-ffa450edef68