Merge r1387085 from trunk:

Use our private function and just allow for conditonal
concat of .persist suffix

Reviewed/backported by: jim
Merge r1386726 from trunk:

Add debug output when slotmem is persisting shm

Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1400951 13f79535-47bb-0310-9956-ffa450edef68