During the upgrade of pre-wc-ng working copies to wc-ng, store a bit more
information in the 'below-working' layer, to avoid test run failures with
future status walker improvements.

The information in 'base-deleted' records was not really wrong, but this
stores information more like how wc-ng would do it.

* subversion/libsvn_wc/entries.c
  (write_entry):
    entry->copied: Also look in parent nodes' below_working layer to find
      copyfrom information.
    below_working_node: When adding information below a working-delete, copy
      the copyfrom and entry information directly instead of guessing based
      on just the path.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1431486 13f79535-47bb-0310-9956-ffa450edef68