Another bug fix in incremental FSFS hotcopy when copying packs.
Another bug fix in incremental FSFS hotcopy when copying packs.

* subversion/libsvn_fs_fs/fs_fs.c
  (hotcopy_body): Remove empty revision directories after all files inside
   them have been moved into a pack.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1214840 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion