* libsvn_fs_fs/structure: Reorder fields a little for clarity.  Fix   the wording of the copyroot field.  Add a note that the "props"   field may be omitted if there are no properties.
* libsvn_fs_fs/structure: Reorder fields a little for clarity.  Fix
  the wording of the copyroot field.  Add a note that the "props"
  field may be omitted if there are no properties.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion