merged fixes of warnings from RC_1_0

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10077 a83610d8-ad2a-0410-a6ab-fc0612d85776
merged compiler warning fixes from RC_1_0

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10079 a83610d8-ad2a-0410-a6ab-fc0612d85776
land libtorrent_aio branch in trunk

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10084 a83610d8-ad2a-0410-a6ab-fc0612d85776
remove unused script

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10085 a83610d8-ad2a-0410-a6ab-fc0612d85776
restore DHT semantics to fix dht unit test

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10086 a83610d8-ad2a-0410-a6ab-fc0612d85776
fixed some unused argument warnings

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10087 a83610d8-ad2a-0410-a6ab-fc0612d85776