Bug#342787: support for provides, alternatives and versions

Hi Peter, Please disregard my previous message, i've had a better idea. i've been hacking deborphan a bit and added support for or dependencies (alternatives), provides and version constraints. with alternatives supported it was easy to add a --removable option, which finds packages that can be

Bug#342787: deborphan: Patch to help dealing with 'provides'

Followup-For: Bug #342787 Package: deborphan Version: 1.7.23 Hi Peter, i've also been bitten by the problem with 'provides', where redundant packages providing the same functionality don't show up as orphans, even though only one is really needed. At the time i'd got around it by writing some