Adjust status report so the PID field for dead processes

makes more sense for the generic user. Previously, it printed out
the PID of the parent httpd process (which is what Apache sets it
to internally). Now we just print out a dash


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@78513 13f79535-47bb-0310-9956-ffa450edef68