fix one more warning

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9500 a83610d8-ad2a-0410-a6ab-fc0612d85776
add moving_storage field to torrent_status

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9501 a83610d8-ad2a-0410-a6ab-fc0612d85776
torrent_handle::torrent_file returns a const torrent_info pointer

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9503 a83610d8-ad2a-0410-a6ab-fc0612d85776
allow force_announce to only affect a single tracker

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9504 a83610d8-ad2a-0410-a6ab-fc0612d85776