the mpm-note-child-killed hook is just for state sync between

ap_{reclaim,relieve}_child_processes() and their callers

the NetWare and OS/2 MPMs don't use that


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1086948 13f79535-47bb-0310-9956-ffa450edef68