Comment 5 for bug 277537

Why should it be (B,C) and not (C,B): does the concept of mainline matter here?
If those reconcile-based solutions are found to work:
1) where should they be run (on the central host where our branches are hosted? On a dev's local branch and then pushed to central?)
2) how much time does such operation take?
3) is such operation blocking on the branch where it is run?
4) assuming it is run on a central host, will "bzr pull" propagate the fixes to dev's local branches?