Merge r1301504 from trunk:

add filesystem paths to some common error messages.

(slightly modified from dev@ post to not bury the "failed/denied")


Submitted by: covener
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1302426 13f79535-47bb-0310-9956-ffa450edef68