Some cleanups. Among other things:

  - The scoreboard is gond, so we don't call it that anymore
  - We were accessing the child table through a weird combination of
    wrappers and direct access; just switch to direct access and get rid
    of scoreboard.[ch]


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@83820 13f79535-47bb-0310-9956-ffa450edef68