Missing update-alternatives configuration in 5.0 package for Xenial

[Stefan Tauner]

Hi,

I did not look at the package metadata but installing clang-5.0 from xenial-updates/universe and afterwards removing clang (and thus clang 3.8) left me without a clang alias while other package provide this alternative. It was fixable via

    update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-5.0 1000
    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-5.0 1000

but I guess it should have happened without that and thus it is a bug in the package(s).