Sozi integration

[Paul Chavent <paul chavent fnac net>]

Hi

Following this old thread (http://marc.info/?t=131209991300001&r=1&w=4), I would like to re-submit a patch that brings 
"Sozi"
(http://sozi.baierouge.fr/wiki/en:welcome) to Dia. Sozi is a bit like Prezi, ie, it's a zooming presentation 
engine (with editor too). Some sample presentations are available here : http://sozi.wikidot.com/presentations

The patch adds a "Sozi" sheet with "Frame" and "Media" objects.

The frame allows to define the views of a presentation. I've frequently used this object and it should be 
functional.

The media allows to insert video/audio in a presentation. I haven't extensively tested this object yet.

I made a tutorial for an overview of the creation process (http://paul.chavent.free.fr/sozi.html).

The source are available at https://gitorious.org/dia_sozi/dia_sozi.git in the sozi-object branch.

Feel free to give any feedback if your are interested.

Regards.

Paul.