* subversion/libsvn_fs_fs/fs.h
  (struct representation_t): Add comment about compatibility requirement
   for the uniquifier, no code change.

* subversion/libsvn_fs_base/fs.h
  (struct node_revision_t): ditto


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1596567 13f79535-47bb-0310-9956-ffa450edef68