Allow <Limit*> to accept arbitrary extension method named instead
	of varfing.  Nothing takes advantage of this yet; that's coming
	next.  Also replace the shorthand Allow setup to use the new
	API (this is possibly a problematical change for the core default
	handler; no problem to back that out).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86057 13f79535-47bb-0310-9956-ffa450edef68