db.imagedata.mathml + docbook-xsl inquiry

Is this part of the db5 content model supported in the xsl version 1
stylesheets? Is the automatic mediaobject selection routine modified
to take the new content model into account? If so, how?

If the above would take too much time to explain, would you instead
please point me to the relevant source file(s) in the repository?

something like:

http://svn.sourceforge.net/viewvc/docbook/path/to/file.xsl

Thank you for your time,

-- 
http://chris.chiasson.name/