This is the 1.3.x current proxy code into 2.0.

PR:
Obtained from: Sam Magnuson
Submitted by:	Chuck Murcko
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86921 13f79535-47bb-0310-9956-ffa450edef68