merged DHT scrape bug fix from RC_0_16

git-svn-id: svn://svn.code.sf.net/p/libtorrent/code/branches/RC_1_0@10626 a83610d8-ad2a-0410-a6ab-fc0612d85776
merge openssl fix from RC_0_16

git-svn-id: svn://svn.code.sf.net/p/libtorrent/code/branches/RC_1_0@10630 a83610d8-ad2a-0410-a6ab-fc0612d85776