doc/comedilib_html_config.xsl: Use numbered sections.
doc/comedilib_html_config.xsl: Use numbered sections.

Change DocBook XSL parameters for HTML output to use numbered sections
(like it was before we switched from SGML to XML) and to use just the
numbers in cross references, rather than number and/or title.

olsonse/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,Linux-Comedi/comedilib