Merge r1564437 from trunk:

* Do not parse URL in case of regular expression as they likely do not follow
  the URL syntax.

PR: 56074

Submitted by: rpluem
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1587699 13f79535-47bb-0310-9956-ffa450edef68