GNATS feature requests

[Richard Earnshaw]

>     BM> 3. If I mark a bug as a duplicate, it would be really helpful if
>     BM> GNATS would add the email of the originator of the duplicate PR
>     BM> to the notification/contact list of the original/canonical PR

It would also be useful for the canonical PR to contain a reference to 
those PRs that are duplicates, just in case one of them happens to have 
additional pertinent information.  A field such as "duplicates: <pr-list>" 
 would do this.