Added a fix for packaging to make it work on Debian as well

Ubuntu dh_python3 added a strange tilda in 3.2 version dependencies,
making installations on Debian break since those have 3.2.x pattern.
Merge pull request #9 from endlessm/eos-shell/2654_debian

AppUpdater: Added a fix for xdelta3 packaging to make it work on Debian as well
Using manual python dependencies now instead of python:depends

dh_python was persistently unable to create proper dependencies that
work both on Debian and Ubuntu and the manual override didn't work for
machines that had no 3.2 candidates.
Merge branch 'debian-master' for Release_2.2.0-rc1_debian