Add the resource limiting code back to Apache 2.0. This only works on

Unix because I can't find any other platforms with rlimit.  If there are
other platforms that need this code, then some of the code needs to move.
This has just barely been tested, so it could probably use some good
testing.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85449 13f79535-47bb-0310-9956-ffa450edef68

server/mpm/dexter/mpm.h

@@ -58,6 +58,7 @@
 
 #include "httpd.h"
 #include "mpm_default.h"
+#include "unixd.h"
 
 #ifndef APACHE_MPM_DEXTER_H
 #define APACHE_MPM_DEXTER_H

server/mpm/mpmt_pthread/mpm.h

@@ -56,6 +56,7 @@
  * University of Illinois, Urbana-Champaign.
  */
 #include "scoreboard.h"
+#include "unixd.h"
 
 #ifndef APACHE_MPM_MPMT_PTHREAD_H
 #define APACHE_MPM_MPMT_PTHREAD_H

server/mpm/prefork/mpm.h

@@ -59,6 +59,7 @@
 #include "httpd.h"
 #include "mpm_default.h"
 #include "scoreboard.h"
+#include "unixd.h"
 
 #ifndef APACHE_MPM_PREFORK_H
 #define APACHE_MPM_PREFORK_H