Add a pool to dupfile. There is no reason that when we duplicate a file, ...

Add a pool to dupfile.  There is no reason that when we duplicate a file,       we would want to use the same pool for the duplicated file as we used for
the original file.  This should solve a problem we were having with
dieing quietly on startup, because we are no longer closing stderr in the
original process and then opening the config file as file descriptor 2.

The original problem report can be found in the message
<20000311232812.A1066@sanguine.linuxcare.com.au>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84985 13f79535-47bb-0310-9956-ffa450edef68