Merge r1243651 from trunk:

Check during config test that directories for access logs exist

PR 29941

Submitted by: sf
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1294600 13f79535-47bb-0310-9956-ffa450edef68