fix makefile to include the right manual html file

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9488 a83610d8-ad2a-0410-a6ab-fc0612d85776
merged storage fix from RC_0_16

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9489 a83610d8-ad2a-0410-a6ab-fc0612d85776
assert that create_torrent returns a valid torrent_info pointer

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9491 a83610d8-ad2a-0410-a6ab-fc0612d85776