Instead of conditionally creating a temporary file inside an access baton's temp area, just use the system temp area.
Instead of conditionally creating a temporary file inside an access baton's
temp area, just use the system temp area.

* subversion/libsvn_client/repos_diff.c
  (create_empty_file): Remove.
  (get_empty_file, apply_textdelta): Directly get a temp file in the
    system temporary area.

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