Bug#708877: Non free licence GFDL

[Michael Wild]

Are you referring to the "...and one Front-Cover Text: ``Available free
from http:openfoam.org[openfoam.org]''" part?

I'm afraid that this really means that freefoam-doc would have to move
to unstable. I'm very sure upstream would not consider removing that
sentence, as newer versions of the document are now even CC BY-NC-ND.