i18n: show localized messages for commands/extensions in hgweb help top (issue3383) in hgweb help top page, help topics are localized, but abstracts of commands and extensions are not, although these are already translated. it is because localized messages for them should be explicitly looked up by original ones. this patch looks localized messages up for each commands/extensions.

revert: show warning when reverting subrepos that do not support revert The warning is similar to the warning that was shown before hgsubrepo revert support was added, with the exception that now the subrepo type is shown. For example, when trying to revert a git subrepo located in "include/mygitsub", the warning message would be: include/mygitsub: reverting git subrepos is unsupported

revset: fix O(n**2) behaviour of bisect() (issue3381)

convert/svn: do not try converting empty head revisions (issue3347) Subversion conversion works by picking trunk and branches heads, computing a revision graph from them and converting the selected commits. By design we fail to convert empty revisions so we have to be careful when discovering the revision graph. In this particular issue, the source svn repository was a partial mirror made by svnsync. The funny part is svnsync preserves all revisions including empty ones. Also, we trusted ra.stat(path, stop).created_rev to give us the latest revision with changes in path history up to stop. This assumption broke at least when path is '', that is the repository root, which always returned 'stop' revision despited being empty. The workaround is to first trust ra.stat() but if the returned revision appear empty, search the whole path history from stop to r1 until some changes are found.

convert/svn: refactor svn_source.latest() with a nested function We will call it more than once for reasons detailed later.

convert/svn: clarify svn_source.latest() stop arg default value stop=0 could pass for a valid default value at first sight.

factotum: rename mount and path configuration entries The factotum extension used mount and path entries which were too generic. These have been replaced by mountpoint and executable (respectively) to match existing conventions.

Added signature for changeset d9e2f09d5488

Added tag 2.2-rc for changeset d9e2f09d5488

Makefile: be more careful when cleaning up pure/ components The recent introduction of pure/__init__.py causes mercurial/__init__.py to get clobbered by make clean.