Computer build

[stephenhensley]

This is completely untested so far.

arm stuff should still compile normal while COMPUTER = true is commented out.

however when that line is uncommented, it will not set prefix, and used limited compile flags, and instead use whatever gcc/g++ is installed on the system.

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I figured this would be a cool way to try out testing the DSP using something like portaudio or RtAudio.

I'll comment more as I work on testing/examples.

[andrewikenberry]

Decouple DaisySP from embedded environment

[stephenhensley]

i'm going to close this now that there is a CMake file, though we may still want to make the default Makefile work for x86 at some point as well.