Bug#920701: diffoscope: Please document and allow to disable automatic inclusion of dbgsym packages

[Mattia Rizzolo]

[03:02:13 PM] 20<mapreri>30 josch: one reason for not removing that feature completely, is that it can be hard to create a .chnages file if all you have are the .debs, and there are good reason for diffoscope to import the debug information while running objdump
[03:02:38 PM] 20<mapreri>30 for sure we could at least add a log.info(importing .dbgsym) line though, at least it would be much less surprising