Merge r1398066 from trunk:

FallbackResource : Support for the 'disabled' argument

Submitted by: gryzor
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1416585 13f79535-47bb-0310-9956-ffa450edef68