Some TPF maint' fixes, primarily wrt startup and shutdown

PR:
Obtained from:
Submitted by:	David McCreedy <McCreedy@us.ibm.com>
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@87944 13f79535-47bb-0310-9956-ffa450edef68