revsets: show current revset abort behavior

tests: move blackbox testing of tags to test-tags.t We're going to refactor tags cache shortly. It is easier to test the blackbox logging if these tests are in test-tags.t.

tests: move mock blackbox extension into own file Having all blackbox log testing in test-blackbox.t isn't scalable. Move the mock blackbox extension into its own file so we can start to move blackbox logging into other tests.

shelve: acquire lock in the right order Text book says that 'wlock' should be acquired before 'lock'. Caught through developer warning.

check-commit: be more picky about detection of wrong bug tag The check-commit script search for "bug" withing bracket and ask people to use (issueXXXX) instead. The test was too wide and matching any "(+b+u+g"sequence.

discovery: don't compute allfuturecommon when it won't be used In repos with many changesets, the computation of allfuturecommon can take a significant amount of time. Since it's only used if there's an obsstore, don't compute it otherwise.

treemanifest: separate flags for trees in memory and trees on disk When we start writing tree manifests with one manifest revlog per directory, it will still be nice to be able to run tests using tree manifests in memory but writing to a flat manifest to a single revlog. Let's break the current '_usetreemanifest' flag on the revlog into '_treeinmem' and '_treeondisk'. Both are populated from the same config, but after this change, one can temporarily hard-code _treeinmem=True to see that tests still pass.

manifestdict: drop empty-string argument when creating empty manifest manifestdict() creates an empty manifestdict, so let's consistently use that instead of explicitly parsing an empty string (which does result in an empty manifest).

lazymanifest: fix memory leak in lmiter_iterentriesnext() after 3d485727e45e

revert: do not requires '--all' if '--interative' is present The '--all' option have been introduced in 890e285c52a1 (August 2006), most probably to prevent user shooting themselves in the foot. As the record process will let you, view and select the set of files and change you want to revert, I feel like the '--all' flag is superfluous in the '--interactive' case.

bundle2: drop the experimental hooks The series at e9ede9b4c2f8::8e13cc0825f1 introduced generic transaction level hooking. This makes the experimental bundle2 specific hooks redundant, we drop them.

bundle2: advertise bundle2 by default That way, any new server will be ready to accept bundle2 payload. The decision for the client to use it is still off by default so this is not turning bundle2 everywhere. We introduce a new kill switch for this in case stuff goes wrong.

subrepo: convert the os.path references in git to vfs There are a handful of os.path references in the free functions at the top of the module that will be trickier to remove.

subrepo: use vfs.removedirs instead of os.removedirs This patch also removes useless composing absolute path by "repo.wjoin()".

vfs: add removedirs