The orig tarball used here was constructed using 'make distcheck' from a git
branch which Ubuntu and Canonical developers have worked on to develop features
which are currently Ubuntu specific.

To inspect these changes individually, please issue

  $ git clone -b wip/iainl/ubuntu-xenial git://git.gnome.org/gnome-software

and see the difference to the GNOME_SOFTWARE_3_20_1 tag.
