Commit
0a6fe9727fd8d22884e4764205c40cb46e799f6a
by Oliver Smithdebian/postinst: add checks, be verbose
Do not attempt to change permissions/ownership if the package gets
upgraded from a version higher than the next release.
Do not fail if the user deleted the config file.
Be verbose when changing permissions.
Related: OS#4107
Change-Id: I2b01a7625cf66fbb7d203f939ddcc1cbab43cf33