* Better error message for use of UNRELEASED suite. Closes: #720523.
* Do not canonicalise suite more than once. Related to: #720526.
* Fix a badly open-coded copy of check_not_dirty. Closes: #720524.
* Fix some bugs in building (eg build-source would fail to do the quilt
* Better error message for use of UNRELEASED suite. Closes: #720523.
* Do not canonicalise suite more than once. Related to: #720526.
* Fix a badly open-coded copy of check_not_dirty. Closes: #720524.
* Fix some bugs in building (eg build-source would fail to do the quilt