Show status changes in bug mail subject

[Sam Tygier]

Martin Pitt wrote:
> Hi all,
> 
> for long bug mail threads it would be very helpful at times if the bug
> mail subject would contain status changes. This makes it easier to see
> if a bug was already fixed, marked as a duplicate, or closed as
> invalid, without needing to read the entire thread.

It would also be handy to have the package name somewhere in the mails, though it may be a bit cramped to put it in the subject.

sam