merge with stable

next: properly report no children when --evolve is used If no aspiring children exist, 'hg next --evolve' should properly issue an error message instead of crashing.

inhibit: do not search for visible obsolete changeset during stripping Stripping use transaction in an unorthodox way. We should not run the inhibit postclose hooks as it can lead to crash.

split: handle bookmarks instead of leaving them on precursor Before this patch we were leaving the bookmarks on the precursor of the split instead of moving them on the tip of the split chain. We add a test to verify the behavior.

split: don't update before it is actually needed Before this patch, we were updating the working copy parent needlessly and before the error checking. This patch fixes the issue.

split: add more output to the test Before this patch, we were not displaying the final graph resulting from the tests but just the obsolscencence markers. This patch adds more output to the test to make it more descriptive.

split: fix commit message numbering error in the test Before this patch, the test was wrong and the successors of a splitted commits all had the same commit messages. This patch makes the test right making sure that the numbering of the split successors is accurate.

evolve: handle split commit for instability

merge with stable

evolve: add test for instability