- clarify wording on handling of empty brigades, see dev@ thread from

  msgid <AANLkTimaQNuUnDhhL0yoBJXNWS0c163HUWM9WHZhmFLh@mail.gmail.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@950583 13f79535-47bb-0310-9956-ffa450edef68