Merge r562860 from trunk:

* Avoid that relative changes to Options change the settings for FileETag.
  This does NOT address the remaining issues with relative settings and
  FileETag mentioned in PR 42027, but at least it isolates the problem
  to them. Currently these issues can be worked around with absolute
  settings.

PR: 42027
Submitted by: Rici Lake <rici ricilake.net>
Reviewed by: rpluem

Submitted by: rpluem
Reviewed by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@563468 13f79535-47bb-0310-9956-ffa450edef68