(hopefully) get WinNT MPM to build using mpm_common.c code; a few notes:

. the selection of ap_sock_disable() is certainly ugly, but that may
  need to be cleaned up in a different manner...
. the directive functions couldn't be AP_DECLARE() if they are to be
  compatible with AP_INIT_TAKExxx(); this is an old restriction


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90138 13f79535-47bb-0310-9956-ffa450edef68