Hi there,
As I could not find a direct maintainer email address, I'm sending this
to the mailing list.
SysLinux, being a GPL product, is being sold under a very restrictive
license without even offering the sources to the public.
I've written up my findings here: http://www.palli.nl/~ivo/rdp/
Please have a look for yourself.
Regards,
Ivo Palli