make client_test save resume data under the torrent file's name consistently
make client_test save resume data under the torrent file's name consistently

git-svn-id: 51f496e7cf1b55ee487494d18ee2d308bae7fe77@7563 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda

steeve/libtorrent,steeve/libtorrent,steeve/libtorrent,steeve/libtorrent,steeve/libtorrent,steeve/libtorrent