evolve: rename some variable ahead of time A refactoring of the content divergence resolution in on its way. use a distinctive name for some variable early to make the change easier to read later.

evolve: add logic to cover --stop when "divergent" relocation in play Changes in test file reflect the added behaviour. The intermediate changeset has been properly cleaned up by the `hg evolve --stop` call.

evolve: test to show that --stop is not working when "divergent" relocated Right now, --stop leave the intermediate changeset (relocating the divergent changeset to its new location behind). This this is an incomplete step it should be removed by `hg --stop`.