Nit: git clone portaudio can be used with one small change

[aparks5]

Is there some benefit to using the assembla trunk version of portaudio vs. git clone? i.e. git clone https://github.com/PortAudio/portaudio.git

I found that I could clone portaudio from git instead of mixing svn and git if and only if I changed the visual studio project include path to include:

$(ProjectDir)\..\..\..\..\portaudio\src\os\win

after which I could build just fine. I don't know if this is helpful at all but for Windows users with only git installed, it does make life a little easier.