Add two new mime types, per the IANA registrations:

  http://www.iana.org/assignments/media-types/application/vnd.google-earth.kml+xml
  http://www.iana.org/assignments/media-types/application/vnd.google-earth.kmz


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@532162 13f79535-47bb-0310-9956-ffa450edef68