obsolete: add revset and test for divergent changesets
This changesets add a new `divergent()` revset similar to `unstable()` and
`bumped()` one. Introducting this revset allows actuall test of the divergent
detection.
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