Merge r1757061, r1770750 from trunk:

ap_reclaim_child_processes() ignores its first argument

note this in the docs, add comment


ap_reclaim_child_processes(): Implement terminate immediately

The behavior for terminate == 1 was documented but not implemented. Do
that now.



Submitted by: sf
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1772332 13f79535-47bb-0310-9956-ffa450edef68