After hours of debugging, the answer was -trivial-, but extremely

  After hours of debugging, the answer was -trivial-, but extremely
  obscure and difficult to trace.  This should do away with the handle
  corruption we experienced.  If anyone cares to walk the crt (source
  is installed in vc\src\crt if you install it w/ Visual C++/Studio)
  it's worth understanding why this occured.

  This patch

    1. creates the pipe non-inherited, and dups the write end
       for inheritence with limited permissions.
    2. sets the STD_ERROR_HANDLE _after_ we fixup the FILE *stderr and fd 2.
    3. Splits the signal_monitor event in two, service_init/service_term
       for clarity and correctness.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93374 13f79535-47bb-0310-9956-ffa450edef68