match: resolve filesets in subrepos for commands given the '-S' argument This will work for any command that creates its matcher via scmutil.match(), but only the files command is tested here (both workingctx and basectx based tests). The previous behavior was to completely ignore the files in the subrepo, even though -S was given. My first attempt was to teach context.walk() to optionally recurse, but once that was in place and the complete file list was built up, the predicate test would fail with 'path in nested repo' when a file in a subrepo was accessed through the parent context. There are two slightly surprising behaviors with this functionality. First, any path provided inside the fileset isn't narrowed when it is passed to the subrepo. I dont see any clean way to do that in the matcher. Fortunately, the 'subrepo()' fileset is the only one to take a path. The second surprise is that status predicates are resolved against the subrepo, not the parent like 'hg status -S' is. I don't see any way to fix that either, given the path auditor error mentioned above.

subrepo: introduce getfileset() This will be used in the next patch to help matchers resolve filesets in subrepos. The default implementation returns an empty set (for git and svn).

phase: default to current revision if no rev is provided (issue4666)

treemanifest: add --dir option to debug{revlog,data,index} It should be possible to debug the submanifest revlogs without having to know where they are stored (in .hg/store/meta/), so let's add a --dir option for this purpose.