follow up r956069 and r1000130 with additional corrections

and clarifications

Deemphasize and re-document min and smax, which are only to be
used in special circumstances.

Stop using the terms "Hard maximum" and "Soft maximum" since they
imply incorrectly that max and smax are closely related parameters
which should be considered in tandem.  That may be true from the
apr_reslist perspective, but not from that of the httpd admin.

Thanks, Rüdiger (but of course all bugs are mine)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1000474 13f79535-47bb-0310-9956-ffa450edef68