Merge r1587255 from trunk:

* support/rotatelogs.c (main): Prevent creation of zombies from
  post-rotate programs.

Reviewed by: druggeri, ylavic, covener


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1588175 13f79535-47bb-0310-9956-ffa450edef68