Update the Debian package

[exzombie]

@ralphlange, you are listed as maintainer of the Debian package. The version in the repos is still 2.7.0, even for trixie and sid. Any chance of seeing 2.8.0 in trixie?

I've built 2.8.0 for our deployment, but it comes at a cost: I had to delete setup.py so that the Debian build system didn't think this was just a Python package. I'm not sufficiently familiar with the build scripts to be able to convince Debian to just run configure while still having Python prerequisites available. It also doesn't hurt us because we don't really need those tools; I'm just saying that bumping the version is just a matter of fetching fresh sources.