Imported using git-ubuntu import.
Changelog parent: f381ad345f5e46a6eca6bbf91afac6e83993e971
New changelog entries:
[ Steve Langasek ]
* Add support to the ubuntu-touch target to generate a separate custom
tarball as part of the build, moving most click packages into it.
[ Colin Watson ]
* Temporarily install the to-be-moved click packages in both core and
custom databases, to simplify the landing process.