Integrate Debian packaging changes

debian/control:
    * restructure to make it easier to incorporate further changes
    * update package descriptions
    * update project URL

debian/rules:
    * use proper hardening syntax

debian/copyright: update to match Debian format

Change-Id: I9a89e7311c8632ae26ac2e6c02d1e427d94b1608
Related: OS#1694
3 files changed