Fixed NEXT/OpenStep building by adding an fallback typedef for

rlim_t to ap_config.h.

Submitted by: Mark Miller <markm@swoon.net>
PR: 4906


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@84177 13f79535-47bb-0310-9956-ffa450edef68