Win32: Deprecate ap_start_shutdown/ap_start_restart in favor of ap_signal_parent(enum).

This simplifies the code a bit for some more MPM cleanup work forthcoming.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91529 13f79535-47bb-0310-9956-ffa450edef68