Drastically increase the listen backlog for mod_cgid's unix socket. It

was pretty easy to hit ECONNREFUSED errors when the backlog was 5.

The backlog can be customized at build time if required.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85787 13f79535-47bb-0310-9956-ffa450edef68