doc/comedilib_dblatex_config.xsl: Italicize function parameters
doc/comedilib_dblatex_config.xsl: Italicize function parameters

Customize the dblatex DocBook XSL "paramdef/parameter" template to place
parameter names in italics in the function synopsis in the LaTeX / PDF
output.

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