Merge r1510098 from trunk:

Fix logging of SSL session cache timeout value (at TRACE2 level).
Inadvertent side effect of r907918, where the timeout calculation
in ssl_callback_NewSessionCacheEntry was slightly modified.

Submitted by: kbrand
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1510527 13f79535-47bb-0310-9956-ffa450edef68