Bug#600960: britney2: binNMU handling appears to be broken

["Adam D. Barratt" <adam@adam-barratt.org.uk>]

retitle 600960 britney2: tpu binNMU handling appears to be broken
thanks

On Thu, 2010-10-21 at 21:19 +0100, Adam D. Barratt wrote:
> b2's handling of binNMUs seems to contain some regressions relative to
> b1's.
> 
> Recent diffs of the b1 and b2 results have shown that:
> 
> - b2 will accept binNMUs which increase installability
>
> - despite having claimed to have accepted binNMUs during the run, b2
> includes the original package version in the Heidi result

Some experimentation indicates that both of these problems seem to be
specific to binNMUs in t-p-u.

Each of these tests added an entry (or modified the existing one) for
cpu_1.4.3-11.2+b1 to the mips Packages file; all other data was taken
from the most recent live b2 run:

- unstable: binNMU migrates and appears in Heidi
- unstable with an added dependency on libmadeup: binNMU fails to
migrate during the main run as it would be uninstallable
- tpu: binNMU migrates during the main run but does not appear in Heidi
- tpu with added libmadeup dependency: binNMU migrates during the main
run but does not appear in Heidi

Adam