The clean solution.

  Divorce dav_fs from the DAV_PROPID_FS_executable property at the
  very head of this module, and drop all references as soon as we
  determine that 'our property' isn't supported.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93005 13f79535-47bb-0310-9956-ffa450edef68