Resolve a slight regression in libsvn_client by stopping to use svn:ignore on
the first existing ancestor directory as the ignores on the directory itself.

We introduced this with the inherited property work, but the libsvn_wc
function we originally used here, now handles all ignores cases properly.

* subversion/libsvn_client/add.c
  (add_dir_recursive): Add result pool. Use svn_wc_get_ignores2() after adding
    as that properly obtains all svn:ignore and svn:global-ignores patterns.
    Update recursion.

  (svn_client__get_all_ignores): Remove function.

  (add): Update caller.

* subversion/libsvn_client/client.h
  (svn_client__get_all_ignores): Remove function.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1454336 13f79535-47bb-0310-9956-ffa450edef68