windows helper scripts for test coverage

test/test_coverage_win.bat

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+REM this is just to get libtorrent built
+bjam -j8 msvc-12.0 boost=source invariant-checks=off asserts=off link=shared boost-link=shared test_primitives linkflags=/profile
+
+Vsinstr -coverage ..\bin\msvc-12.0\debug\asserts-off\boost-link-shared\boost-source\debug-iterators-on\export-extra-on\invariant-checks-off\threading-multi\torrent.dll @vsinstr_excludes.rsp
+
+REM prepare for running all the tests again
+del /s /q bin
+del /q test.coverage
+
+REM add vsperfmon to the path
+set path=%path%;c:\Program Files (x86)\Microsoft Visual Studio 12.0\Team Tools\Performance Tools
+
+Start vsperfmon -coverage -output:test.coverage
+
+REM Now we run all the unit tests to record test coverage
+bjam -j8 msvc-12.0 boost=source invariant-checks=off asserts=off link=shared boost-link=shared linkflags=/profile
+
+vsperfcmd -shutdown
+

test/vsinstr_excludes.rsp

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+/exclude:boost::*
+/exclude:std::*
+/exclude:mp_*
+/exclude:fast_s_mp_*
+/exclude:boost_asio_handler*
+/exclude:s_mp_*