[Glass] Upgrade GS 2.4 -> GS 3.1 when GLASS, Seaside etc. versions have already diverged

[Pieter Nagel]

On Fri, 2014-02-28 at 22:07 +0200, Pieter Nagel wrote:
> This
> is because we have upgraded to a lot of dependencies published on github
> as filetree repositories, and upgradeSeasideImage can't handle that, as
> mentioned earlier on this thread.

Correction: it's the BaselineOf... classes that upgradeSeasideImage
can't handle; not sure to what extent the filetree issue is relevant.

--
Pieter Nagel