test-bisect: fix shell-dependent output

change 'journal already exists' to 'abandoned transaction found' Journal already exists is a pretty internal piece of information, which doesn't necessarily mean much to people who are not familiar with the code. The new text is a more well-known concept.

verify: report existence of journal

bisect: no need to save the state if it wasn't changed

record: get the right position (account for skipped files)

log --limit: break after a limited number of csets (broken by f3d60543924f)

transaction: more specific exceptions, os.unlink can raise OSError

lock: catch specific exceptions

patch: use the public ctx API instead of the internals

patch: don't use mutable object as default argument

patch: initialize all attributes of the hunk class

patch: simplify logic

lock: use '==' instead of 'is' for integer equality ('is' may not work)

pychecker: remove unused local variables

remove unused imports

changelog: do not use a mutable default value

bundlerepo: keep the bundlerevlog interface in sync with revlog

localrepo/branchcache: remove lbranchmap(), convert users to use utf-8 names We don't need a "local-charset" aware branchmap() function, we can convert the names when needed during the output.

localrepo/branchcache: kill unused localrepo.branchcache The UTF-8 version of the branchcache is the master, always up-to-date, we can rename it to localrepo._branchcache.

localrepo/branchcache: rebuild the "charset-aware" branchcache when needed It's simpler and the two cache weren't always in sync otherwise: localrepo.branchcache would not be updated after calling branchmap()

churn: fix --progress (broken by f3d60543924f)

transfer branchmap branch names over the wire in utf-8

churn: fix changeset count (broken by 9b127e888640)

churn: ability to display added/removed lines separately