fix valgrind run of test_metadata_extension

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9174 a83610d8-ad2a-0410-a6ab-fc0612d85776
more valgrind instrumentation

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9175 a83610d8-ad2a-0410-a6ab-fc0612d85776
attempt to make test_pe_crypto pass under valgrind in reasonable time

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9176 a83610d8-ad2a-0410-a6ab-fc0612d85776
more valgrind instrumentation

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9177 a83610d8-ad2a-0410-a6ab-fc0612d85776
fix valgrind build

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@9179 a83610d8-ad2a-0410-a6ab-fc0612d85776