changegroup: pass 'repo' to allsupportedversions
In the next changesets, we will introduce more logic directly related to the
repository to decide what version have to be supported. So we now directly pass
the repo object instead of just ui.
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved