Merge remote tracking branch 'version-control-svn/namespaced' into namespaced

This is a no-op merge, explicitly considering and rejecting the
removal of subject-level documents from this subject-level branch.
After this merge, folks can merge both version-control/namespaced and
version-control-svn/namespaced branches without conflicts.

* version-control-svn/namespaced:
  version-control: Remove subject-level documents from this SVN branch