fixed bug where multi-file torrents with just a single file in left directories after storage::move_storage was called
fixed bug where multi-file torrents with just a single file in left directories after storage::move_storage was called


git-svn-id: 6ed3528c1be4534134272ad6dd050eeaa1f628d3@924 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda

svn2github/libtorrent-trunk,svn2github/libtorrent-trunk,svn2github/libtorrent-trunk,svn2github/libtorrent-trunk