* Fix PR37145 (data loss with httpd-2.0.55 reverse proxy method=post) by

  exchanging APR_BRIGADE_CONCAT with ap_save_brigade to ensure that
  transient buckets get setaside correctly between various iterations of
  ap_get_brigade calls.

Reviewed by: Joe Orton, William Rowe, Jim Jagielski, Jeff Trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@327590 13f79535-47bb-0310-9956-ffa450edef68