merged changes from RC_1_0

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10263 a83610d8-ad2a-0410-a6ab-fc0612d85776
fix another boost.chrono time overflow issue

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10264 a83610d8-ad2a-0410-a6ab-fc0612d85776
test build fix. another boost.chrono overflow issue fixed

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10266 a83610d8-ad2a-0410-a6ab-fc0612d85776
merged changes from RC_1_0

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10267 a83610d8-ad2a-0410-a6ab-fc0612d85776
test build fix

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@10268 a83610d8-ad2a-0410-a6ab-fc0612d85776