run-tests: add --time option to log times for each test --time also prints out the wall-clock time each test takes in descending order.

run-tests: remove resultslock since it serves no useful purpose Each child process has its own copy of the results dict, so all access to the results dict is serial.

run-tests: use pickle to send results from children to parent JSON would probably be preferable, but it isn't available for Python 2.4 or 2.5.

bookmark: remove useless line in `validdest` This case is already covered by the `if old == new:` conditional at the start of the function.

bookmark: issue a single call to `allsuccessors` per loop Update to this code was minimalist when `allsuccessors` argument were changed from a list to a set. As this code is getting my attention again I realised we can drastically simplify this part of the code by issue a single call to `allsuccessors`.

bookmark: simplify mutability check in `validdest` There is no need to check phase by hand. We already have a ctx method for that.

Merge with stable

Merge with mpm

bundle: add revset expression to show bundle contents (issue3487) bundle() revset expression returns all changes that are present in the bundle file (no matter whether they are in the repo or not). Bundle file should be specified via -R option.

tags: add formatter support