* doc/Makefile.am
	(TECHNICAL_HTML_OUTPUTS, TUTORIAL_HTML_OUTPUTS)
	(WHITE_PAPER_HTML_OUTPUTS, REF_GUIDE_HTML_OUTPUTS):
	New variables.
	($(TECHNICAL_HTML), $(TUTORIAL_HTML))
	($(WHITE_PAPER_HTML), $(REF_GUIDE_HTML)):
	Remove these targets.
	Superseded by...
	($(TECHNICAL_HTML).stamp, $(TECHNICAL_HTML_OUTPUTS))
	($(TUTORIAL_HTML).stamp, $(TUTORIAL_HTML_OUTPUTS))
	($(WHITE_PAPER_HTML).stamp, $(WHITE_PAPER_HTML_OUTPUTS))
	($(REF_GUIDE_HTML).stamp, $(REF_GUIDE_HTML_OUTPUTS)):
	...these (new) targets.
	(EXTRA_DIST, MAINTAINERCLEANFILES): Add $(TECHNICAL_HTML).stamp,
	($(TUTORIAL_HTML).stamp, $(WHITE_PAPER_HTML).stamp and
	$(REF_GUIDE_HTML).stamp.
	(dist_doc_DATA, MAINTAINERCLEANFILES): Remove $(TECHNICAL_HTML),
	$(TUTORIAL_HTML), $(WHITE_PAPER_HTML) and $(REF_GUIDE_HTML).
	Add $(TECHNICAL_HTML_OUTPUTS), $(TUTORIAL_HTML_OUTPUTS),
	$(WHITE_PAPER_HTML_OUTPUTS) and $(REF_GUIDE_HTML_OUTPUTS).