[OT] DocBook XSL license

["Jan Tosovsky" <j.tosovsky@email.cz>]

Dear All,

I am implementing stylesheets for DocBook conversion into special format
which I'd like to publish on GitHub. I am reusing the code from DocBook XSL
distribution - from /common and /lib.

I plan to distribute it under a common license, most likely GPL v3.

I'd like to verify if this license is compatible with that found in DocBook
XSL distribution:

http://docbook.sourceforge.net/release/xsl/current/COPYING or alternatively
http://docbook.sourceforge.net/release/xsl/current/doc/copyright.html

What do you think?

Btw, do you happen plan changing this license to something more common? :-)

Thanks,

Jan