Merge r1769593 from trunk (mergeinfo for r1769601):

Updated changelog with the last change of mod_proxy_fcgi

r1759984, r1760018 and r1752347 are all changes related
to a bug fixed for mod_proxy_fcgi.

Submitted by: elukey


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1769609 13f79535-47bb-0310-9956-ffa450edef68