extensions: use normpath to allow trailing '\' on Windows (issue4187) Fixes same issue as 5c794e7331e7 but now works on Windows too. With this patch a trailing backward slash won't prevent the extension from being found on Windows, and we continue to support any combination of forward and back slashes within the path.

tests: fix unused imports from inotify removal caught by pyflakes

revset: added ordered generatorset classes with __contains__ method They stop iterating as soon as they go past the value they are looking for, so, for values not in the generator they return faster.

merge: use the right ancestor when both sides copied the same file The tests shows no real changes because of this ... but there must be some weird corner cases where using the right ancestor for the merge planning is better than using the wrong one.

copies: when both sides made the same copy, report it as a copy Not used yet ... but shows up in debug output.

merge: handle create+delete prompts in calculateupdates I would like to move it all the way to the interactive resolve state like merges are ... but this is a first intermediate step.