When migrating properties for a replaced node, move base props into the WORKING tree.
When migrating properties for a replaced node, move base props into the WORKING
tree.

Found by: rhuijben

* subversion/libsvn_wc/upgrade.c
  (migrate_props): Update documentation and properly migrate the base props
    for replaced nodes.

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