fix python binding Jamfile to use the same default linkage as everything else. polish run_tests script to print out less verbose build logs

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9860 a83610d8-ad2a-0410-a6ab-fc0612d85776
attempt at msvc-10.0 build fix for test_dhy + small documentation note

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9862 a83610d8-ad2a-0410-a6ab-fc0612d85776