[Unison-hackers] Mac update

[Alan Shutko]

I've put together a new build which resolves the issue of files in the same directory sometimes being displayed in different groups (with the same name) in the outline view.

Marcus, I have still not been able to reproduce the crash but I have not given up yet. In this build, I also built a command-line unison with UISTYLE=text. I would be interesting if that version also crashes for you.

The zip file is at 

https://dl.dropboxusercontent.com/u/9371330/Unison.zip

And the git repo is at 

https://github.com/alanshutko/unison