distro: differentiate upstream packages
Users reported conflicts between upstream and downstream packages. In
order to differentiate, I propose to insert cznic.
prefix into package
release which will lead to a preference of upstream packages over
downstream ones when same versions are available:
1.2.3-1 < 1.2.3-cznic.1
1.2.3-999999999 < 1.2.3-cznic.1
Furthermore it's now possible to tell whether upstream or downstream packages are in use just by inspecting installed packages' releases which should make debugging easier. For example:
dpkg -l | grep cznic
Equivalent change has been merged in Knot Resolver: knot-resolver@58f48b2b