* tools/dev/wc-ng/bump-to-19.py   (move_and_shard_pristine_files): If a shard already exists, don't    attempt to rename it into itself. Saw this error on a working copy    which had its subdirectories at various formats, so bump-to-19.py    errored out early. On subsequent runs, however, it kept trying to rename    .svn/pristine/00 to .svn/pristine/00/00 within already converted    directories, not realising the pristine directory had already been sharded.
* tools/dev/wc-ng/bump-to-19.py
  (move_and_shard_pristine_files): If a shard already exists, don't
   attempt to rename it into itself. Saw this error on a working copy
   which had its subdirectories at various formats, so bump-to-19.py
   errored out early. On subsequent runs, however, it kept trying to rename
   .svn/pristine/00 to .svn/pristine/00/00 within already converted
   directories, not realising the pristine directory had already been sharded.

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