Making syntax highlighting work
-------------------------------

 ~/p/xsieve/opt/bin/xsieve -xinclude -o testdoc.html testdoc.xsl testdoc.xml

Development in this directory will be cancelled.
Something like $XSIEVE/examples/syntax_highlighting will be used.


colorer.scm:      the main part, uniting trees
run-colorer.scm:  low-level driver to execute a colorizing program
colorer.xsl:      processing of "programlisting"

testdoc.* + test.xml: testing
run.sh:               run "testdoc" conversion

testdata.xml, test.scm: testing
test-one.scm:           testing