Fix for suexec execution of CGI scripts from mod_include

(including security patch to ensure that <!--#include file="name.cgi"-->
is run as the suexec user rather than the httpd user)
PR: 7791, 8291
Submitted by: Colm MacCarthaigh <colmmacc@redbrick.dcu.ie>
Reviewed by:	Brian Pane


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95290 13f79535-47bb-0310-9956-ffa450edef68