On win32, we must never, never close the parent's copy of the

child's read end for a reliable piped logger.  The child runs
and manages it's own logs, and even if the parent did instead, 
the mpm would be adjusted to pass down the child write ends 
without read ends to the pipes, so this forever makes no sense.

Backport: r607666

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@607667 13f79535-47bb-0310-9956-ffa450edef68