Allow child processes sufficient time for cleanups but making

ap_select in reclaim_child_processes more "resistant" to
signal interupts.

PR: Bugz 8176
Obtained from:
Submitted by:	David Winterbourne <davidw@financenter.com>
Reviewed by:	Jim Jagielski, Bill Rowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@94759 13f79535-47bb-0310-9956-ffa450edef68