Add nested tag support in way that doesn't break with Muse 3.02

Add nested tag support in way that doesn't break with Muse 3.02

2006-10-16  Michael Olson  <mwolson@gnu.org>

	* planner-authz.el (planner-authz-markup-tags): Adapt for nested
	tag support.

	* planner-notes-index.el: Use add-hook instead of add-to-list, in
	case muse-publish has not been loaded yet.  Use
	muse-publish-markup-tags instead of planner-markup-tags.

	* planner-publish.el (planner-publish-markup-tags): Adapt for
	nested tag support.  Make the <nested-section> tag nestable.

	* planner-timeclock.el: Use add-hook instead of add-to-list, in
	case muse-publish has not been loaded yet.  Use
	muse-publish-markup-tags and muse-colors-markup-tags instead of
	planner-markup-tags.
	(planner-colors-timeclock-report-tag)
	(planner-publish-timeclock-report-tag): New functions created from
	planner-timeclock-report-tag.

git-archimport-id: mwolson@gnu.org--2006-planner-el/planner-el--devel--0--patch-88