live-build might be run from a local folder rather than the system
installation, so the dpkg version number should not override the version
picked up from VERSION
if we care about the possibility of the installed package version
potentially differing from the version of the git checkout, or
whatever, then this should be printed alongside it, as now done.
Gbp-Dch: Ignore
[Raphaël Hertzog: tweak to apply on top of my changes]
fb41c19009