Send the 'Close Alert' message to the peer upon closing a SSL session. This

required creating a new EOC (End-Of-Connection) bucket type to notify mod_ssl
that the connection is about to be closed.


Reviewed by: Joe Orton, Justin Erenkrantz


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk/modules/ssl@102793 13f79535-47bb-0310-9956-ffa450edef68