Makefile extract

Making the XProc specification is accomplished (mostly) by these two rules:

langspec.html: ,langspec.xml typed-pipeline-library.xml \
               ../style/docbook.xsl ../style/dbspec.xsl \
               ../style/xprocns.xsl ../style/rngsyntax.xsl
	$(XJPARSE) $<
	$(SAXON) $< ../style/dbspec.xsl $@
	$(TIDY) --doctype loose --output-xhtml true -q -utf8 -mn $@

,langspec.xml: langspec.xml parallel.xml \
               schemas/xproc.rnc schemas/xproc.rng \
               standard-components.xml references.xml glossary.xml \
               error-vocabulary.xml conformance.xml namespace-fixup.xml \
               language-summary.xml error-codes.xml
	$(MAKE) -C examples
	$(XINCLUDE) $< > $@