Solve the os_is_absolute_path problem for the moment.

  This is -not- the permanent patch for 2.0, simply a placeholder till we
  have the canonical name implemented in APR for good.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86804 13f79535-47bb-0310-9956-ffa450edef68