Following up on r1632286, optimize copying versioned directories a bit by
enabling existing optimized logic.

* subversion/libsvn_wc/copy.c
  (copy_to_tmpdir): Create directory from the workqueue instead of doing a
    lot of work in a tempdir.
  (copy_versioned_dir): Pass dirent to copy_to_tmpdir. Update recursive call
    and comment.
  (copy_or_move): Update caller.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1632298 13f79535-47bb-0310-9956-ffa450edef68