Merge r814091, r814779, r81544, r816701 from trunk:

htcacheclean: 19 ways to fail, 1 error message. Fixed.
  Move declaration to remove a compiler warning.
  Detab.

Submitted by: minfrin, trawick
Reviewed by: minfrin, poirier, covener



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@816906 13f79535-47bb-0310-9956-ffa450edef68