Win32 cleanup:

1. Eliminate unnecessary (I hope :-) call to wait_for_multiple_objects
2. Clean up parent process code that handles shutdown and restart signals
3. Honor shutdown and restart events immediately, even it it means loosing connections in the TCP stack's listen queue. Restarts triggered by MaxRequestPerChild will caue the child process to handle all connections in the listen queue before exiting.
PR: 3815


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@83228 13f79535-47bb-0310-9956-ffa450edef68