Change semantics of ap_child_table somewhat. Instead of checking for a

dead process with status == SERVER_DEAD, check with pid == 0. This
makes somewhat more sense conceptually, and also matches the behavior
of MPMs that use a shmem scoreboard to track children.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85950 13f79535-47bb-0310-9956-ffa450edef68