Give the child GENERIC_WRITE only to the stderr log channel,
  GENERIC_READ|GENERIC_WRITE to the scoreboard mapping,
  EVENT_MODIFY_STATE|SYNCHRONIZE to it's exit event,
  and fix a _major_ bug in the NullACL code that set the length
  by the size of the pointer-to-acl, rather than the size of an acl.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93300 13f79535-47bb-0310-9956-ffa450edef68