filelog: rename filelog.size() to filelog.len()
filelog.size() is misleading for users of revlog.size() since
it doesn't return the size of the revision.
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
abort: Permission denied: test-ro-message/b/vehicle