upgrade windows audio test projects to vs 2013
throw exception if hresult from IsFormatSupported() doesn't return a code we think we can handle.
protect against closestMatch leaking if an exception is thrown.
Merge branch 'master' of https://github.com/cinder/Cinder.git

Conflicts:
	test/_audio/SampleTest/vc2013/SampleTest.vcxproj
	test/_audio/SpectralTest/vc2013/SpectralTest.vcxproj