hidden: Add a hiddenrevs attributes to changelog.
This attributes hold the set of all revisions that should be ommited by command
and tools displaying changesets.
This set is given as a hit. Command and tools are responsible to check it in
order to filter they outpur.
Code adding revisions to the set are responsible to the consistency of it's
data.
$ hg init a
$ cd a
$ echo foo > b
$ hg add b
$ hg ci -m "b"
$ chmod -w .hg/store
$ cd ..
$ hg clone a b
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ chmod +w a/.hg/store # let test clean up
$ cd b
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions