Having the SQL on a different numbering scheme is useful to provide an ungrade
path. But pg_repack has no need of such a path as it can be uninstalled with
no problem, so we are not going to provide update script. Hence it's much
easier to have a single version number for everything.
The behaviour of the script is not really predictable if it is run on the
loose objects of pg_reorg >= 1.1.8. So let's be explicit about what version
we expect as starting point.
