Avoid UnicodeDecodeError when svnlook returns error message.

* tools/backup/hot-backup.py.in
  (): Import locale moule for locale.getpreferredencoding.
  (get_youngest_revision): Use str for I/O in subprocess.Popen on Python 3. 


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1882780 13f79535-47bb-0310-9956-ffa450edef68
1 file changed