Provide the win32 worker process a null (but valid) stdout pipe, and
  redirect child startup errors to the main server error log.
  Corresponds to the change in Apache 1.3.23


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92896 13f79535-47bb-0310-9956-ffa450edef68