[arch-dev-public] Stop reopening old bug reports.

I had this a couple of times now: Some of my bug reports, which have been closed for a over year have been reopened. Please do not do this. While the symptoms are related, the problem is most of the time completely different, and having two issues in one report is only confusing, and it annoys me a lot. Please please, don't do this, tell the users to open new bug reports.