There appear to be no dissenters (other than for brand-new and
	incompatible syntaxes) after three days, and I want to get this
	in for 1.3.3.  It can always be modified or reverted later.

	Add +/- prefixes to IndexOptions keywords, allow merging of
	multiple occurrences, and document the changes.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82176 13f79535-47bb-0310-9956-ffa450edef68