Keep sync-exclude.lst when uninstalling during update

Please don’t overwrite the sync-exclude.lst file when performing an automatic uninstall of the current version in the course of an client update.

I just had to manually delete a lot of files since the file has been overwritten and stuff has been uploaded/downloaded to and from clients erroneously since i wasn’t aware of this until now. Also I’m pretty sure that I’m going to “trap” into this again during future updates…

Please report this to the bugtracker

Don’t forget to provide more information, e.g. between which versions you run the update.