[Lazarus] I ported some components, not sure if I can publish them :-(

[Felipe Monteiro de Carvalho]

I think it's pretty clear that you can publish the modifications.
There is no such requirement that in order for you to publish a
modifyed work the author must give up his copyright.

Take any GPL software for example. It is copyrighted and licensed, but
you are allowed to redistribute modifyed copies, because the license
allows so, and so does "public domain" allow.

-- 
Felipe Monteiro de Carvalho