Add -S as a synonym for -t -DDUMP_VHOSTS

Submitted by:	Thom May <thom@planetarytramp.net>
Reviewed by:	Aaron Bannert


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@97120 13f79535-47bb-0310-9956-ffa450edef68