[Rpm-maint] [PATCH] Add option to have unique debug file names across version/release/arch.

[Florian Festi]

Added this and the previous patches upstream. I am still not 100% happy
with the code added to rpmbuild. But let's be realistic here: Adding the
facilities to do this in a clean way is a much bigger thing to do and
postponing these changes till then is not helping anyone. If we ever get
the ability to add files and also sub packages from (dependency)
generator scripts we can move the logic back out.

Florian