PR47782: Explain the delta between the compiled-in defaults for MaxRequestsPerChild and the common

default conf contents.  Not a backport because in trunk, they've been modified to line up.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1031660 13f79535-47bb-0310-9956-ffa450edef68