Different fix for issue 4111, update under add with not-present parent.
This reverts part of r1448784.

* subversion/include/private/svn_wc_private.h
  (svn_wc__node_is_not_present): Add base_only parameter.

* subversion/libsvn_client/update.c
  (update_internal): Use new API to detect missing base nodes.

* subversion/libsvn_wc/node.c
  (svn_wc__node_is_not_present): Add base_only parameter.
  (svn_wc__node_get_base): Revert r1448784 fix.

* subversion/libsvn_client/commit_util.c
  (harvest_not_present_for_copy): Adjust call.

* subversion/libsvn_client/copy.c
  (verify_wc_dsts): Adjust call.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1449003 13f79535-47bb-0310-9956-ffa450edef68