Add status param option so that current worker

status can be changed via editing httpd.conf instead
just using web page. Seems the ApacheCon is paying of.
Thanks to Sander for pointing that out.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@225751 13f79535-47bb-0310-9956-ffa450edef68