Comment 31 for bug 494481

The above series of fixups completes, with the exception of qbzr which is held back pending another issue (incorrect selection of upstream-* tag as tip of upstream branch causes unnecessarily complex history), the fixups of all NoSuchTag failures caused by a past bug involving failure to copy tags from the Debian import branches.

The remaining instances of this particular failure signature mainly fall into the categories of:

 * people using merge-upstream, but importing the wrong versions
 * people not using merge-upstream
 * branches where instead of using merge-upstream, the upstream VCS is being directly merged into the packaging branch, so there are no upstream-* tags at all